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Measuring the burden of treatment for chronic disease: implications of a scoping review of the literature

Abstract

Background

Although there has been growing research on the burden of treatment, the current state of evidence on measuring this concept is unknown. This scoping review aimed to provide an overview of the current state of knowledge as well as clear recommendations for future research, within the context of chronic disease.

Methods

Four health-based databases, Scopus, CINAHL, Medline, and PsychInfo, were comprehensively searched for peer-reviewed articles published between the periods of 2000–2016. Titles and abstracts were independently read by two authors. All discrepancies between the authors were resolved by a third author. Data was extracted using a standardized proforma and a comparison analysis was used in order to explore the key treatment burden measures and categorize them into three groups.

Results

Database searching identified 1458 potential papers. After removal of duplications, and irrelevant articles by title, 1102 abstracts remained. An additional 22 papers were added via snowball searching. In the end, 101 full papers were included in the review. A large number of the studies involved quantitative measures and conceptualizations of treatment burden (n = 64; 63.4%), and were conducted in North America (n = 49; 48.5%). There was significant variation in how the treatment burden experienced by those with chronic disease was operationalized and measured.

Conclusion

Despite significant work, there is still much ground to cover to comprehensively measure treatment burden for chronic disease. Greater qualitative focus, more research with cultural and minority populations, a larger emphasis on longitudinal studies and the consideration of the potential effects of “identity” on treatment burden, should be considered.

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Background

Globally, chronic diseases, such as diabetes, cancer and asthma, are now in epidemic proportions [1]. With their increasing prevalence, the focus for health professionals has shifted from treating acute illness to helping their patients manage the ‘work’ of living with such conditions [2, 3]. The job of health professionals has been complicated by the fact that chronic disease rarely occurs in isolation, with many people experiencing two or more diseases concurrently, something known as multimorbidity [4]. For patients, there is not only the complexity of dealing with one chronic condition, but the work of trying to live ‘normal’ lives in the face of multimorbidity, which can be overwhelming. This further adds to the ‘work’ that patients must do to manage and live with such health conditions and the psychological distress they experience as a result.

Lately, the work that patients need to do to manage and treat chronic disease has been referred to as treatment burden [5]. Treatment burden represents the active work patients need to do including, learning about treatments and their consequences, completing administrative tasks, such as paper work, adhering to complex treatment regimens, managing medications, changing lifestyle behaviours, visiting multiple health professionals, and undertaking medical and other laboratory tests, etc. [6,7,8]. Treatment burden is concerned with the negative experiences resulting from the process of undertaking treatment [8]. The burden of treatment can be dependent on the type of treatment a person is undergoing. For example, chemotherapy to destroy cancer cells or dialysis treatment for kidney disease is much more invasive and burdensome compared to medication used to manage high blood pressure.

Sav et al. [8] reviewed research on treatment burden published between 2000 and 2011 and suggested that a number of factors can contribute to treatment burden for chronic disease, including age and gender, illness duration or severity, treatment characteristics including the number and dose of medications, and family circumstances such as level of support. Sav et al. [8] further drew attention to the dynamic nature of treatment burden suggesting that a person’s overall perception of burden can change throughout the course of their illness, depending on its severity and impact. Tran et al. [9] in their existing taxonomy of treatment burden, indicated that healthcare which imposes a burden on patient’s include: management of medications, organising and performing non-pharmacological treatment, lifestyle changes, condition and treatment follow-up, organising formal caregiver care, paperwork tasks, and earning and developing an understanding of the illness and treatment [6]. More recently, Demain et al. [10] discussed the sociological aspect of treatment burden, suggesting that burden is not only brought about by the workload associated with a treatment regimen, but also the impact of that workload on everyday activities and a patient’s identity. For example, elderly adults may be more likely, compared to young adults, to accept treatment burden as a necessary evil brought on by old age and living with multimorbidity. Finally, treatment burden is different from other related terms, such as symptom burden, where the latter is focused on living with the burden that the disease imposes, e.g. burden on paid employment, and not on the need to treat the disease in order to change its course or ameliorate its’ effects, which is the focus of treatment burden [8]. Demain et al’s [10] Tran et al’ [9] Sav et al’s [8, 11] research in the area of treatment burden will be used as the conceptual framework to guide data collection and analysis in this manuscript (see Fig. 1). The framework, shows several antecedents, which lead to burden, the major dimensions and consequences, operating in a cyclic nature (e.g., some consequences become antecedents and vice versa). Of particular interest, the conceptual framework shows the five key dimensions of treatment burden, including, financial, medication, administrative, lifestyle, healthcare and time/travel.

Fig. 1
figure 1

Conceptual framework for the study

Although treatment burden has gained popular research momentum in the past decade, particularly since May et al.’s seminal work in 2009 on “minimally disruptive medicine”, debate continues around the best way to measure and understand the level of treatment burden among patients. The absence of a universally accepted holistic measure makes it difficult for researchers and health professionals to understand levels of treatment burden among patients, and hinders efforts to introduce effective interventions that reduce the level of burden experienced by patients. Sav et al.’s [7] review found that treatment burden has generally been measured as one dimension, e.g. medication use, within a multidimensional instrument designed to assess health-related quality of life or treatment satisfaction. Sav et al. [8] argued that these measures had wide variation in terms of the dimensions of treatment burden and the way this concept was defined. Although significant work has been conducted on treatment burden since 2011, the current state of evidence on measuring treatment burden is unknown. Yet, such knowledge is essential in order to move forward and agree on the best way to measure treatment burden in different populations and with various or multiple chronic conditions.

In this paper we report results of a scoping review of the literature on measuring treatment burden for chronic disease. Our overarching objective is to provide an overview of the current state of knowledge on how treatment burden for chronic disease has been measured and conceptualized. It is worth noting that our aim is not to conduct an assessment of the quality of the selected literature (which is the aim of a systematic review), nor to critique the statistical assessment of treatment burden questionnaires. Rather, there was a need to ‘scope’ the large but fragmented body of literature on how a patient’s level of treatment burden, for a variety of chronic conditions, has been measured. Our secondary aims are: (i) to advance our conceptualization of the measurement of treatment burden; (ii) understand the methodological issues in developing treatment burden measurements; (iii) offer clear recommendations for future research in this sphere to develop our understanding of this concept.

Methods

A scoping review is a "form of knowledge synthesis that addresses an exploratory research question aimed at mapping key concepts, types of evidence, and gaps in research related to a defined area or field by systematically searching, selecting and synthesizing existing knowledge" [12], p. 1284. Scoping reviews can be helpful in exploring research gaps, setting research agendas and providing recommendations for policy makers [13]. Although the quality of papers are not assessed, scoping reviews explore a diverse range of papers and provide a considerable summary of the relevant literature [14,15,16]. Our scoping review was guided by five of the six steps outlined by Arksey and O’Malley [14]. As a widely cited and accepted way of conducting a scoping review, this framework provided an opportunity to guide the data collection and analysis in this study. The main stages included:

  1. (i)

    Classifying the research question. The key research questions of this scoping review included (a) how was treatment burden measured? (b) what is the best way to measure this construct?

  2. (ii)

    Finding the relevant studies/search strategy. The authors identified the main concepts of the topic, the burden of treatment in chronic health conditions, and collated a list of relevant keywords. The search strategy was refined by an initial search of the literature to identify key MESH terms relating to this topic. Four health-based databases, Scopus, CINAHL, Medline and PsychInfo, were searched using Boolean Operators for the following terms: “treatment burden” OR “burden of treatment” OR “medication burden” OR “burden of medication” OR “treatment experience” OR “time burden” OR “workload burden” OR “cost of illness” AND “chronic disease”. Snowball searching, including pursuing references of references and citations searching, was also used.

  3. (iii)

    Choosing the studies based on inclusion/exclusion criteria. Inclusion and exclusion criteria were developed by the authors during several meetings and are described in Fig. 2 and guided by the conceptual framework developed for this study (Fig. 1). For example, to be included in the review, papers needed to measure or focus on specific dimensions of treatment burden, developed in the conceptual framework (e.g. financial, medication, administrative, lifestyle, healthcare and time/travel). Peer-reviewed journal papers were included if they were: published between the period of 2000–2016, written in English, involved human participants and described a measure for burden of treatment, e.g. including single measurements, measuring and/or incorporating one or two dimensions of burden of treatment. Quantitative, qualitative and mixed-method studies were included in order to consider different aspects of measuring treatment burden. Papers were excluded if they did not fit into the conceptual framework of the study, focused on a communicable chronic condition, for example human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV/AIDS) or substance abuse. Papers talking about carer burden, in addition to patient burden of treatment, were also included.

  4. (iv)

    Titles and abstracts were independently read by two authors (AS & SM) using the inclusion criteria. After applying the eligibility criteria, all remaining papers were evenly allocated between three authors (AS, NS and SM) and categorized into included, excluded or unsure. Full-text of all unsure papers was read by another author (AS, NS or SM). In case of any disagreement, the matter was resolved through in-depth discussion between the authors. Charting the data. Data was extracted using a standardized proforma, which collected data on: year of publication, authors, country, data collection, participant number and chronic disease. The papers were divided between three authors and the extracted data from all the papers (particularly the treatment burden categorization), were cross-checked in order to reduce any possible individual bias [17]. Disagreements regarding the treatment burden categories and data extractions were resolved by discussions and brainstorming among two authors, and then by involving a third author if required [17].

  5. (v)

    Collating, summarizing, and reporting the findings. For all included papers, the instruments, and the key dimensions of treatment burden, or both, were described and compared. A comparison analysis was used in order to explore the key treatment burden measures and categorize the papers into three groups (with the aid of the conceptual framework), depending on the level of treatment burden measured. The three groups were:

  • Direct measures (Group 1): The paper clearly states that it measures and/or explores treatment burden. This category includes a more holistic approach to treatment burden and measures all or most of the dimensions in the conceptual framework developed for this study

  • Inferred measures (Group 2): The paper stated that it measured treatment burden, however, it included only one or two dimensions (which are included in the conceptual framework), such as financial burden, burden of time/travel. If the paper did not contain the phrase ‘treatment burden’ or ‘burden of treatment,’ then it was categorized into Group 3.

  • Indirect measures (Group 3): No reference specifically to treatment burden in the text or ‘burden of treatment.’ However, there is some incorporated measure for one or two dimensions of treatment burden, as per the conceptual framework. Because treatment burden is still in the developmental stage of operationalization, we believed that the scoping review would have been incomplete without its inclusion. Although these papers do not specifically refer to the concept of treatment burden they measure one or two of the commonly accepted dimensions of the concept. Furthermore, this was in line with the aim of a scoping review, which aims to draw upon a diverse range of papers and provide a considerable summary of the relevant, available literature.

Fig. 2
figure 2

Framework of study categorization

A summary of the data analysis framework used is provided in Fig. 2.

Results

Database searching identified 1458 potential papers. After removal of duplications, and irrelevant papers by title, 1102 abstracts remained. After applying the eligibility criteria, 121 papers remained for further investigation. An additional 22 papers were added via snowball searching. After screening was completed 101, full papers were included in the review. A flow chart describing the screening process is shown in Fig. 3. Included studies were published between the years 2000–2016; a quarter of the papers were published in 2015 (n = 26; 25.5%). The majority of the studies involved quantitative measures of treatment burden (n = 64; 63.4%). Twenty-eight studies (27.7%) were qualitative, and nine (8.9%) were mixed methods (see Table 1). One of these studies [18] involved mathematical modelling to identify how treatment burden influences treatment decisions.

Fig. 3
figure 3

Overview of literature search and inclusion

Table 1 Study Characteristics

From the 101 studies, a large majority were from Northern America (n = 49; 48.5%). There were 34 papers (33.6%) from Europe (16, 15.8%, from the UK) and 10 papers (10%) from the Asia-Pacific. Four studies involved participants from more than one country [9, 19,20,21]. Other sites included: Israel, Turkey, South Africa and Jordan (please refer to Table 1).

The smallest sample size involved six adults in Baylor et al.’s [22] phenomenological study, with the largest involving a dataset of 1,424,378 people in Scotland [23]. Twenty-eight studies involved less than 50 participants, 23 of which used a qualitative study design. A total of six studies involved more than 10,000 participants. Five papers did not specifically state the age range of participants, while 61 papers 60.4%) focused on adults (18 to 60 years of age), 12 (11.9%) on adults over the age of 60, 7 (6.9%) on children and adolescents, 6 (5.9%) on parents and 10 (9.9%) on children and parents.

A range of chronic conditions were included, the majority of which were grouped into one of the following therapeutic areas: cancer, cardiovascular disease, diabetes, psychological, respiratory, dermatological, or other, for example, chronic kidney disease, coeliac disease, transplant, primary ciliary dyskinesia and intensive care unit. The majority of studies focused on people with multimorbidities (n = 24), followed by cancer (n = 18), respiratory conditions (n = 17), diabetes (n = 13), psychological (n = 7), cardiovascular (n = 5), dermatological (n = 2). Fifteen studies focused on other chronic health conditions. The majority of studies involving children (and/or parents) were for respiratory conditions, e.g. cystic fibrosis. In accordance with the data extraction strategy, papers were grouped into three categories and analyzed using this grouping system.

Group 1 - direct measures

There were a total of sixteen papers in this group. All papers focused solely on understanding the burden of treatment among adults, with chronic health conditions, with the exception of Sav et al. [24], which explored the meaning of treatment burden among stakeholders and key non-government health organizations. Nine papers were qualitative based [2, 11, 21, 24,25,26,27,28,29], five were quantitative [6, 9, 30,31,32], and two were mixed-methods studies [33, 34].

Two of the qualitative based papers used Normalization Process Theory (NPT), which aims to explain how the work of engaging in some ensemble of activities is accomplished through the operation of four mechanisms: coherence, cognitive participation, collective action, and reflexive monitoring, to interpret and categorize their data analysis [2, 27]. Eton et al. [25] utilized this theory to inform interview questions in their study. Gallacher et al’s [2] paper was based on secondary data (originally undertaken to explore chronic heart failure), and the authors extracted information pertaining to treatment burden. Other methods of data analysis included content analysis, thematic analysis, framework analysis, and Karamanidou et al. [28] utilized Interpretive Phenomenological Analysis (IPA). A review of the qualitative papers indicates that the interview probe questions covered the following key dimensions of treatment burden in the literature: medication difficulties and/or experience, cost of treatment, relationships with health professionals, understanding of treatment and associated information needs, challenges/barriers to treatment and/or self-management, lifestyle restrictions, family relationships, treatment adherence and satisfaction. However, with the exception of Gallacher et al. [1], Karamanidou et al. [28], Tran et al’s [21] paper, and Eton et al’s [25, 26] papers, there was limited information about the interview process and the specific questions asked about treatment burden. Nevertheless, sample interview questions in some of these papers included: ‘where participants went for information regarding their illness,’ ‘how treatment restricted their daily activities,’ ‘what participants felt was the most difficult aspect to manage with their treatment and illness,’ ‘whether participants believed that it was important to follow their treatment regimen,’ and ‘whether participant’s felt that they knew enough about their treatments.’ Eton et al’s (2012) paper on building a measurement framework of treatment burden in complex patients with a range of chronic conditions was the most comprehensive in terms of detailing the questions covered in the interviews. The authors included an interview schedule in their paper, which consisted of 11 questions informed by previous studies of treatment impact/satisfaction [35] and NPT. The authors used the framework they developed in this study for their subsequent studies in 2015 and 2016, the latter being a quantitative validation of a 9 factor, 48-item treatment burden measure: the Patient Experience with Treatment and Self-management (PETS).

In contrast to the qualitative papers, those utilizing a quantitative design generally contained more descriptive information about how treatment burden was measured. For example, in 2006, Nordyke et al. [31] conducted a study to validate a Patient Satisfaction Questionnaire for Anemia Treatment (PSQ-An) in cancer patients. Although their study was primarily concerned with treatment satisfaction rather than burden, the latter was nevertheless measured via a 10-item scale. However, there was limited insight provided into how the treatment burden dimension of the PSQ-An was developed or the specific conceptual framework that was used. In another paper, focused on cancer patients, Henry et al. [32] investigated the side effects of chemotherapy or radiotherapy treatment; limited information was provided about how this was measured beyond referring to the 13-item Functional Assessment of Chronic Illness Therapy (FACIT) Fatigue Scale (version 4). Bohlen et al. [33] examined (by video-graphic data) whether people with type 2 diabetes and their clinicians discussed treatment burden, the characteristics of their discussions, and their attempts to address this burden during visits. Based on previous research, the authors identified four dimensions of treatment burden: access, administration, effects, and monitoring. Also in 2012, Tran et al. developed the Treatment Burden Questionnaire (TBQ) in France, which consisted of seven items (two of which had four sub-items) in the French language. Later, Tran et al. [21] adapted the TBQ amongst an English speaking sample using an internet platform. The TBQ in this paper assessed the following dimensions: (1) taking medication, (2) self-surveillance, laboratory tests, doctor visits, need for organization and administrative tasks, (3) following advice on diet and physical exercise, and (4) social impact of the treatment. The PETS measure, validated by Eton et al. [30] included the following dimensions: medication information, medications, medical appointments, monitoring health, interpersonal challenges, medical expenses, difficulty with healthcare services, role activity limitations, and physical/mental exhaustion.

Group 2 - inferred measures

A total of 50 papers were identified in Group 2. Despite suggesting that they measured treatment burden, the papers in this group only included one or two established dimensions of treatment burden, e.g. financial costs, burden of time. The majority of Group 2 papers were quantitative studies (36 in total) [18, 19, 23, 36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68]. There were also nine qualitative papers [22, 69,70,71,72,73,74,75,76], and five mixed-method studies [20, 77,78,79,80].

There were wide variations within these papers with respect to their level of focus on treatment burden. Some papers suggested a focus on treatment burden by their study title, yet upon further inspection only included one or two commonly accepted dimensions of treatment burden such as medication or costs, for example, [68, 69]. Some authors calculated treatment burden with respect to the number of treatment episodes or in terms of level of treatment intensity [46, 51]. Others explored how treatment burden influenced treatment decisions [18, 70, 80] and developed an associated measure [80]. This measure, Willingness to Accept Life-Sustaining Treatment (WALT) was also utilized by Janssen et al. [44] for Dutch patients with two of the three conditions explored by Fried et al. [80]: chronic obstructive pulmonary disease and chronic heart failure. Other authors stated that they measured treatment burden but provided minimal or no detail on the actual measurement process or sub-scales used [20, 44, 48, 55, 56, 78]. Readers would therefore need to search beyond the paper to identify what dimensions of treatment burden were included. There were also some papers that referred to treatment burden but focused predominantly on experiences of living with a chronic condition, rather than treatment burden per se [73, 74], or alternatively, focused on both, i.e. the burden of symptoms and treatment, as seen in Liu et al. [47]. Finally, there were several papers that focused on understanding treatment experiences and included several broad or specific questions on treatment burden [20, 64]. Robertson et al. [63] was unique in that it surveyed regular medication users and the impact of financial and medication burden (in addition to other variables) on choosing to take a new medication.

The most common dimension of treatment burden examined in Group 2 was related to medication use, generally around diabetes management (e.g., blood glucose monitoring), e.g., [19, 38, 39, 49, 79], and other chronic diseases, such as asthma [71], attention deficit hyperactivity disorder [69] and stroke [23]. Based on the limited information on survey development in many studies, it appeared that medication burden was measured by asking participants questions related to their experiences of taking medication, including, but not limited to, side effects, inconvenience, e.g. from carrying, storing, and administering medication, and impact on lifestyle, e.g. diabetic medication and effect on meal times, exercise and/or diet [19, 48, 79]. Alternatively, one broad treatment burden question was included by Hanke et al. [43], who asked participants with actinic keratosis how much of a problem had the treatment been, ‘for example by making your home messy, or by taking up time?’ Some studies identified the total number of therapeutic drug classes or medications a person was taking, i.e. polypharmacy, as a sign of treatment burden [23, 49, 58,59,60]. Yet, there was acknowledgement by Gallacher et al. [23] that medication use represents only one dimension of treatment burden; other considerations include financial burden and healthcare access [23]. Five papers investigated the relationship between treatment burden (alongside a range of other variables) on medication adherence [50, 55, 61, 72, 75]. For example, a question asked to adolescents with cystic fibrosis was ‘are there other things, besides the time involved, that make it difficult to do your therapies or take your medicines?’ [72]. Similarly, Hock et al. [61] asked the following question: ‘Treatments have been burdensome on my family's resources, e.g. money, time, energies.’

Following medication, there was an emphasis on financial burden or the cost of treatment for participants and their families. For example, Colombo et al. [40] examined the medical costs (i.e. hospitalizations, outpatient medical interventions, medication, devices and dietetic products) associated with treating cystic fibrosis in Italy. Additionally, Kent et al. [45] investigated, via three questions, whether cancer survivors who experienced financial problems were likely to forgo or delay medical care, such as counselling, dental care, checkups, or prescription medication. Qualitative interviews with lung transplant recipients and health professionals identified treatment burden as a novel health-related quality of life dimension, including financial costs [76]. Among the papers that focused on financial burden, there was also attention on the cost of treatment upon the family unit, in addition to the patient [45]. Thus, it was evident that the cost of treatment, particularly medication, was a well-established concern for participants.

Within Group 2, there was significant interest in understanding the burden of treatment for cystic fibrosis, for children, adolescents, adults, and parents [36, 40, 52,53,54, 57, 65, 75]. A total of 12 Group 2 papers focused on cystic fibrosis, although the study by Ziaian et al. [68] also included participants with asthma and diabetes. The general focus of these studies was on quality of life; treatment burden was measured as part of living with cystic fibrosis, generally via two or three items. However, detailed information on this was missing from many papers. Most of these papers simply indicated that health related quality of life for cystic fibrosis was measured, which included physical functioning, treatment burden and respiratory symptoms. Nevertheless, the large number of papers that focused on cystic fibrosis confirmed that this particular chronic condition is associated with high treatment burden.

There was also a focus on investigating the burden of treatment on specific treatment interventions. Most of these papers measured treatment burden via one or two simple questions, which asked about general treatment experiences. These measures were not grounded in theory and lacked a clear focus on treatment burden. Rather, they were generally focused on the impact of a particular treatment intervention. For example, for two Randomized Control Trial (RCT) patient groups on varying medication for proliferative lupus nephritis, Grootscholt et al. [42] measured the associated burden of treatment via a 5-point Likert scale and used open-ended questions, for example, exploring which aspect of treatment was perceived as most burdensome. Baylor et al. [22] investigated treatment burden for spasmodic dysphonia by asking participants how Botox treatment affected their ability to do things they wanted to do. Levinson et al. [77] asked past ICU patients whether they thought their treatment was worthwhile. Finally, Drabe et al. [66] asked participants with thyroid cancer, and their partners, about how they experienced surgery and what they felt about the radioactive iodine treatment and associated treatment isolation.

Group 3 - indirect measures

There were a total of 35 papers in this group; 23 of these were quantitative [81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103], 10 were qualitative [104,105,106,107,108,109,110,111,112,113], and two mixed-methods [114, 115].

Although Group 3 papers did not specifically mention treatment burden or burden of treatment, careful analysis suggested that they measured the dimensions of burden put forward by Sav et al’s [8] review, such as medication, time/travel and cost of treatment. Rather than concentrating on treatment burden, these papers generally focused on treatment experiences and included arbitrary questions that measured some dimensions of treatment burden. For example, Broom et al. [85] used a questionnaire with questions relating to bone treatment convenience, e.g. did treatment for bone disease take up family time and were participants concerned about associated side effects. Similarly, Passik [97] asked participants undergoing cancer treatment about common treatment side effects, such as weight loss, constipation, nausea, pain, or vomiting. DeSmedt et al. [88] asked heart failure patients about adverse drug events, without specifically discussing treatment burden. Eiser and Upton [89] aimed to provide estimates of the cost of caring for a child with cancer, without specifically discussing how the cost of treatment could be a critical dimension of treatment burden. In contrast to the afore-mentioned studies, Blome et al. [84] assessed the importance of treatment goals for people with moderate to severe psoriasis. Participants acknowledged the importance of low treatment burden with respect to time/travel and costs. A mixed-method study by Tijerina [115] explored the experiences of Mexican-American women receiving dialysis treatment, and identified a loss of identity from changes in their body image, loss of independence, freedom and ability to fulfil social roles. Furthermore, women who expressed concerns about body image were more likely to be non-adherent to treatment (Tijerina 2006).

As can be seen from the examples provided, a large number of studies (n = 22) focused on medication related factors, which is a commonly accepted dimension of treatment burden. Most of these studies aimed to understand the experiences of participants whilst using prescribed medication or treatments, such as dialysis or surgical procedures, and talked about issues, such as medication side effects, cost, inconvenience or changes in treatment, and feelings whilst taking medications. There were also instances where medication burden or polypharmacy was the general focus of the study and was calculated with the number of medications a person was taking, for example, using more than five medications was classified as burdensome [60, 92, 93], or by the number of medications dispensed or filled [82]. This, as noted by the authors, assumed that patients actually used what was supplied to them. In addition to medication, there was also a focus on cost of treatment [89, 102, 103] and time and travel burden [81, 86, 95, 96]. For example, United States (US) families at a higher risk of experiencing time burden from caring for children with chronic conditions included those from a lower income and educational background, were culturally diverse, lived in a rural location and had public health insurance [95]. Furthermore, the more severe the child’s chronic condition, the higher the risk of time burden. The issue of time and financial burden was also emphasised by caregivers of children with chronic conditions in a Canadian study [102]. Although these papers appeared similar to those in Group 2, the fundamental difference was that these papers did not specifically mention treatment burden in the text, and focused on investigating medication or treatment-related experiences. Alternatively, Group 2 papers mentioned the term ‘treatment burden’ and investigated medication related issues as a way of understanding the level of treatment burden.

Some of the studies focused on understanding the illness or treatment journey among participants with chronic conditions, particularly cancer [98, 108,109,110,111, 114]. For example, Shadid et al... [110] investigated the experiences and barriers of Aboriginal people in accessing cancer services and treatment. The authors found that transport, accommodation and travel expenses were a concerning issue for this specific population whilst undergoing cancer treatment. Similarly, Salter et al. [109] explored the perceptions of dialysis and kidney transplant among African American adults undergoing haemodialysis. Although Salter et al’s [109] paper did not specifically focus on treatment burden per se, the responses of participants during the focus group interviews clearly indicated episodes of treatment burden, with one participant admitting: “I used to feel like Superman. I’m unhealthy. This dialysis thing is like kryptonite. It sucked everything out of me.” Also, Clark et al. [114] explored treatment decisions by prostate cancer patients, which could be related to treatment burden, e.g. regretting treatment choice. Stajduhar et al. [111] wanted to understand the experiences and educational needs of Canadian adults receiving iodine therapy for thyroid cancer. In-depth responses to the question ‘tell me about your experiences when you were a patient on our unit,’ generated treatment burden-related responses, such as feeling socially and physically isolated during treatment. In a qualitative study, Bower et al. [104] interviewed 28 participants with various co-morbidities (including cancer) to identify how they perceived, and responded to, their condition/s, i.e. illness representations. The authors identified concerns related to medication burden, such as addiction to pain killers and quantity of medication prescribed.

Finally, in some papers, there was also a focus on reduction strategies that participants employed to minimize treatment burden. Burcu et al. [87] asked participants if they actively implemented strategies to reduce medication costs. For example had participants taken smaller doses, or skipped doses, of a medication to make it last longer, decided not to fill or refill a prescription because it was too expensive, or spent less money on food, heat or other basic needs to be able to afford medication, etc. Bower et al... [104] found that many patients took multiple medications for co-morbidity and when they prioritized a chronic condition, they also prioritized the medication used to treat that condition.

Discussion

This scoping review reveals a significant variation in how the treatment burden experienced by those with chronic disease, has been operationalized and measured. These variations reflect the evolving and developing nature of the treatment burden literature, as well as the diversity of chronic conditions experienced. Indeed, research on treatment burden has significantly increased since May et al’s (2009) seminal work. This has led to the development of various measures to assess and understand the level of treatment burden experienced by those with chronic disease. However, our review indicates that despite this growing research interest and substantial progress, research gaps remain.

Firstly, our review highlights the dominance of quantitative based papers to understand and measure treatment burden; 64 of the 101 studies in this review were quantitative. Despite the widely known strengths of quantitative research, the limited use of qualitative methods limits our ability to understand, in-depth, treatment burden experiences among specific populations. For example, a qualitative approach may be preferred over a quantitative method, when there is a need to explore and understand, in-depth, how non-traditional and minority populations experience treatment burden. We believe that Eton et al’s [25] and Karamanidou et al’s [28] work provide a useful starting point for a focus on qualitative research. In their qualitative paper, Eton et al. [25] provided an 11 question interview schedule, which asks participants about their health condition/s and how they care for them, the impact of treatments and medical self-care on their daily life, difficulties accomplishing self-care, relationships with health professionals, financial problems and the factors that may alleviate treatment and self-care burden [26]. Additionally, Karamanidou et al’s [28] paper, which uses IPA, includes a valuable interview schedule, which can be easily amended to reflect the type of chronic condition under investigation. Researchers have much to gain from using exploratory qualitative research methods to further conceptualize treatment burden and understand how it occurs, before assessing levels of treatment burden among large populations. This is not to say that qualitative research should be conducted at the expense of quantitative research but rather, both should be utilized to obtain a more in-depth and comprehensive explanation. Therefore, further mixed-methods research would be highly valuable in this area. Additionally, the question remains as to whether all domains of treatment burden are equally important. While many studies included in this review focused on medication burden, further studies may be needed to identify if this is really the most important dimension of treatment burden, and whether this changes depending on study population.

Secondly, despite the plethora of quantitative based research, it is clear that creating a measurement questionnaire/survey to assess levels of treatment burden is still in its infancy phase. Although there has been increasing interest in treatment burden, our review indicates that only a handful of studies focus solely on the concept of treatment burden and offer systematic measures [6, 9, 21, 25, 26, 28, 30]. The primary focus for most Group 2 and 3 papers was on understanding the level of treatment burden as a component of overall treatment experience or the burden of living with a chronic condition. While this is valuable, most studies make little reference to treatment burden and simply measure it via one or two items or as an aggregated figure. However, previous research has shown [8] that treatment burden is a subjective concept and one person’s response to a particular treatment intervention may be very different to another person undergoing the same treatment. Research has suggested that individual capacity issues relating to the individual and their wider support networks will influence response and ability to cope with any given level of treatment burden [116]. Hence, it is likely to be inadequate to simply measure treatment burden by asking participants if they take more than five prescription medications, as seen in this review.

Additionally, it seems unlikely that asking participants to estimate their level of treatment burden via two or three questions will fully capture the multi-dimensional nature of treatment burden. At best, two or three questions on treatment burden would only be sufficient to aid understanding of one dimension of this concept, such as medication use. We recommend looking at the psychometric literature for guidance about the development and validation of questionnaires. This body of literature can offer guidance around the number, length, and wording of questions, data collection and pilot testing, validation and evaluation, reliability and validity. In the meantime, Eton et al’s [26, 30] recent PETS measure, along with Tran et al’s [9, 21] TBQ are promising and can be a valuable starting point in this area. However, we do acknowledge that trying to understand levels of treatment burden via lengthy surveys or long lists of questions may not always be possible because of time constraints, particularly in a clinical setting. Hence, it would be valuable to develop a short measure to identify levels of treatment burden in a clinical setting and implement strategies to alleviate its impact. This will not only be valuable in a clinical setting but also could accompany other measures focusing on high burden conditions, such as cystic fibrosis. A short measure of treatment burden could easily complement other measures where the focus is on understanding quality of life or the experiences of living with a particular chronic condition. However, we do caution against using short measures for scientific purposes, where the intent would be on understanding the dimensionality of treatment burden.

Thirdly, our scoping review highlights a lack of longitudinal designs to understand and measure treatment burden. Given that levels of treatment burden experienced by a person can change over time in response to disease severity and control and the development of other chronic conditions [8], the limited number of longitudinal studies could be viewed as problematic. Measuring treatment burden via cross-sectional study designs, as it has been done, impedes our ability to fully understand the dynamic nature of treatment burden.

Fourthly, our review has also confirmed the scant evidence of treatment burden in developing countries and culturally different populations. The overwhelming majority of studies have been conducted among Anglo-Saxon populations in affluent, high-income countries such as the United States, United Kingdom, Canada, Australia and France. Thus, there is limited knowledge about the experiences of people in different health contexts and among specific racial and cultural populations. The lack of research among such populations is problematic because understandings of key concepts, such as death, illness, health and treatment can be very different in non-traditional societies. For example, is it not uncommon for people in certain cultures in some countries (e.g. Ghana in Africa) to perceive illness as a form of retribution from their gods and not a condition which can be treated medically [117]. We caution researchers to be vigilant about the applicability of measures developed in Western societies to understand treatment burden in non-traditional societies and populations. Although this is important for testing the robustness of the measures and original conclusions in Western societies, it is unwise to assume that they can be uncritically applied elsewhere. Instead, what may be more suitable are qualitative exploratory research methods, such as in-depth interviews to conceptualize the meaning and measure levels of treatment burden for people from diverse cultural backgrounds.

Finally, we think that a fundamental theme that is missing from current measures of treatment burden is identity. Despite the recognition of the impact of treatment workload on everyday activities, how treatment burden influences a person’s identity is limited (Demain et al. [10] and Tijerina [115]). There is also scant evidence on whether there is gender, age or cultural differences in treatment burden. Identity, which can be highly associated with gender, may offer a missing link to explaining the subjective and dynamic nature of treatment burden. Sav et al’s [3] recent paper, suggested that younger adults with chronic condition/s experience greater levels of treatment burden, compared to older adults. Although the authors argue that there may be several explanations to this finding, one possible reason could be related to the issue of identity. More specifically, elderly adults may be more likely to accept treatment burden as a necessary evil brought on by old age and living with multimorbidity. This group may become accustomed to the treatment workload or have more time when they retire. In contrast, treatment burden may less socially sanctioned in younger adults, who are expected to foster a healthy, productive, and active identity. Considering identity in treatment burden may help unravel many of the nuances of this concept and further attention is warranted in this area. Importantly, this suggests future research needs to examine how the concept of treatment burden may differ depending on variables such as age, gender, or cultural setting.

To our knowledge, this is the most comprehensive review of the treatment burden literature to date. Yet, it has a several limitations that must be acknowledged. It is possible that we may have missed papers that measure this concept. For example, this review was restricted to English language only papers, and hence, may have missed key papers measuring treatment burden in non-English speaking samples. However, there is growing evidence that this is unlikely to be a major problem [118]. The paucity of studies reporting the issue of treatment burden in low income countries could be considered a further limitation. Quality appraisal of the papers was not undertaken, however this aligns with the intention of a scoping review [14] which aimed to be comprehensive in providing a narrative and descriptive account of the current state of evidence on measuring treatment burden.

Conclusions

Although research on treatment burden is growing rapidly, there is still much ground to cover and work to be done. Outstanding research issues that need addressed include a greater qualitative focus, more research with non-traditional populations in developing countries, a greater emphasis on longitudinal studies and the consideration of the potential effects of “identity” on treatment burden.

Abbreviations

(PSQ-An):

Patient Satisfaction Questionnaire for Anemia Treatment

CINAHL:

Cumulative Index to Nursing and Allied Health Literature;

FACIT:

Functional Assessment of Chronic Illness Therapy Fatigue Scale

HIV/AIDS:

Human immunodeficiency virus infection and acquired immune deficiency syndrome

IPA:

Interpretive Phenomenological Analysis

NPT:

Normalization Process Theory

PETS:

Patient Experience with Treatment and Self-management

RCT:

Randomized Control Trial

TBQ:

Treatment Burden Questionnaire

UK:

United Kingdom

US:

United States

WALT:

Willingness to Accept Life-Sustaining Treatment

References

  1. World Health Organization: Noncommunicable diseases. In: Media Centre. Edited by Organization WH. Geneva, Switzerland: World Health Organization; 2017.

  2. Gallacher K, May CR, Montori VM, Mair FS. Understanding patients’ experiences of treatment burden in chronic heart failure using normalization process theory. Ann Fam Med. 2011;9(3):235–43. 239p

    Article  PubMed  PubMed Central  Google Scholar 

  3. Sav A, Whitty JA, McMillan SS, Kendall E, Kelly F, King MA, Wheeler AJ. Treatment burden and chronic illness: who is at most risk. Patient - Patient-Centered Outcomes Res. 2016;9(6):559–69.

    Article  Google Scholar 

  4. Barnett K, Mercer SW, Norbury M, Watt G, Wyke S, Guthrie B. Epidemiology of multimorbidity and implications for health care, research, and medical education: a cross-sectional study. Lancet. 380(9836):37–43.

  5. Mair FS, May CR. Thinking about the burden of treatment. BMJ : British Medical Journal. 2014;349

  6. Tran VT, Montori VM, Eton DT, Baruch D, Falissard B, Ravaud P. Development and description of measurement properties of an instrument to assess treatment burden among patients with multiple chronic conditions. BMC Med. 2012;10

  7. May C, Montori VM, Mair FS. We need minimally disruptive medicine. BMJ. 2009;339

  8. Sav A, King MA, Whitty JA, Kendall E, McMillan SS, Kelly F, Hunter B, Wheeler AJ. Burden of treatment for chronic illness: a concept analysis and review of the literature. Health Expectations. 2015;18(3):312–24. 313p

    Article  PubMed  Google Scholar 

  9. Tran VT, Harrington M, Montori VM, Barnes C, Wicks P, Ravaud P. Adaptation and validation of the Treatment Burden Questionnaire (TBQ) in English using an internet platform. BMC Med. 2014;12(1):109.

  10. Demain S, Gonçalves AC, Areia C, Oliveira R, Marcos AJ, Marques A, Parmar R, Hunt K. Living with, managing and minimising treatment burden in long term conditions: A systematic review of qualitative research. PLoS One. 2015;10(5):e0125457.

  11. Sav A, Kendall E, McMillan SS, Kelly F, Whitty JA, King MA, Wheeler AJ. You say treatment, I say hard work: treatment burden among people with chronic illness and their carers in Australia. Health Soc Care Community. 2013;21(6):665–74. 610p

    PubMed  Google Scholar 

  12. Colquhoun HL, Levac D, O'Brien KK, Straus S, Tricco AC, Perrier L, Kastner M, Moher D. Scoping reviews: time for clarity in definition, methods, and reporting. J Clin Epidemiol. 2014;67(12):1291–4.

    Article  PubMed  Google Scholar 

  13. Tricco AC, Lillie E, Zarin W, O’Brien K, Colquhoun H, Kastner M, Levac D, Ng C, Sharpe JP, Wilson K, et al. A scoping review on the conduct and reporting of scoping reviews. BMC Med Res Methodol. 2016;16:15.

    Article  PubMed  PubMed Central  Google Scholar 

  14. H. A, L. OM: Scoping studies: towards a methodological framework. Int J Soc Res Methodol 2005, 8(1):19–32.

  15. Davis K, Drey N, Gould D. What are scoping studies? A review of the nursing literature. Int J Nurs Stud. 2009;46(10):1386–400.

    Article  PubMed  Google Scholar 

  16. Levac D, Colquhoun H, O'Brien KK. Scoping studies: advancing the methodology. Implement Sci. 2010;5:69.

    Article  PubMed  PubMed Central  Google Scholar 

  17. Singh A, Harford J, Schuch HS, Watt RG, Peres MA. Theoretical basis and explanation for the relationship between area-level social inequalities and population oral health outcomes – a scoping review. SSM - Population Health. 2016;2:451–62.

    Article  Google Scholar 

  18. Vijan S, Sussman JB, Yudkin JS, Hayward RA. Effect of patients' risks and preferences on health gains with plasma glucose level lowering in type 2 diabetes mellitus. JAMA Intern Med. 2014;174(8):1227–34.

    Article  PubMed  PubMed Central  Google Scholar 

  19. Brod M, Valensi P, Shaban JA, Bushnell DM, Christensen TL. Patient treatment satisfaction after switching to NovoMix® 30 (BIAsp 30) in the IMPROVE™ study: an analysis of the influence of prior and current treatment factors. Qual Life Res. 2010;19(9):1285–93.

    Article  PubMed  PubMed Central  Google Scholar 

  20. Lucas JS, Behan L, Dunn Galvin A, Alpern A, Morris AM, Carroll MP, Knowles MR, Leigh MW, Quittner AL. A quality-of-life measure for adults with primary ciliary dyskinesia: QOL-PCD. Eur Respir J. 2015;46(2):375–83.

    Article  PubMed  PubMed Central  Google Scholar 

  21. Tran V-T, Barnes C, Montori VM, Falissard B, Ravaud P. Taxonomy of the burden of treatment: a multi-country web-based qualitative study of patients with chronic conditions. BMC Med. 2015;13(1):115–115. 111p

    Article  Google Scholar 

  22. Baylor CR, Yorkston KM, Eadie TL, Maronian NC. The psychosocial consequences of BOTOX injections for spasmodic dysphonia: a qualitative study of patients' experiences. J Voice. 2007;21(2):231–47. 217p

    Article  PubMed  Google Scholar 

  23. Gallacher KI, Batty GD, McLean G, Mercer SW, Guthrie B, May CR, Langhorne P, Mair FS. Stroke, multimorbidity and polypharmacy in a nationally representative sample of 1,424,378 patients in Scotland: implications for treatment burden. BMC Med. 2014;12(1):151–151. 151p

    Article  Google Scholar 

  24. Sav A, McMillan SS, Kelly F, Kendall E, Whitty JA, King MA, Wheeler AJ. Treatment burden among people with chronic illness: what are consumer health organizations saying. Chronic Illness. 2013;9(3):220–32.

    Article  PubMed  Google Scholar 

  25. Eton DT, Ramalho de Oliveira D, Egginton JS, Ridgeway JL, Odell L, May CR, Montori VM. building a measurement framework of burden of treatment in complex patients with chronic conditions: a qualitative study. Patient Relat Outcome Measures. 2012;3:39–49.

    Article  Google Scholar 

  26. Eton DT, Ridgeway JL, Egginton JS, Tiedje K, Linzer M, Boehm DH, Poplau S, Ramalho de Oliveira D, Odell L, Montori VM, et al. finalizing a measurement framework for the burden of treatment in complex patients with chronic conditions. Patient Relat Outcome Measures. 2015;6:117–26.

    Article  Google Scholar 

  27. Kahn LS, Vest BM, Madurai N, Singh R, York TRM, Cipparone CW, Reilly S, Malik KS, Fox CH. Chronic kidney disease (CKD) treatment burden among low-income primary care patients. Chronic Illn. 2015;11(3):171–83.

    Article  PubMed  Google Scholar 

  28. Karamanidou C, Weinman J, Horne R. A qualitative study of treatment burden among haemodialysis recipients. J Health Psychol. 2014;19(4):556–69.

    Article  PubMed  Google Scholar 

  29. Ridgeway JL, Egginton JS, Tiedje K, Linzer M, Boehm D, Poplau S, de Oliveira DR, Odell L, Montori VM, Eton DT. Factors that lessen the burden of treatment in complex patients with chronic conditions: a qualitative study. Patient Preference Adherence. 2014;8:339–51.

    Article  PubMed  PubMed Central  Google Scholar 

  30. Eton DT, Yost KJ, Lai JS, Ridgeway JL, Egginton JS, Rosedahl JK, Linzer M, Boehm DH, Thakur A, Poplau S, et al. Development and validation of the patient experience with treatment and self-management (PETS): a patient-reported measure of treatment burden. Qual Life Res. 2016:1–15.

  31. Nordyke RJ, Chang C-H, Chiou C-F, Wallace JF, Yao B, Schwartzberg LS. Validation of a patient satisfaction questionnaire for anemia treatment, the PSQ-an. Health Qual Life Outcomes. 2006;4:28–28.

    Article  Google Scholar 

  32. Henry DH, Viswanathan HN, Elkin EP, Traina S, Wade S, Cella D. Symptoms and treatment burden associated with cancer treatment: results from a cross-sectional national survey in the U.S. Support Care Cancer. 2008;16(7):791–801.

    Article  PubMed  Google Scholar 

  33. Bohlen K, Scoville E, Shippee ND, May CR, Montori VM. Overwhelmed Patients: A videographic analysis of how patients with type 2 diabetes and clinicians articulate and address treatment burden during clinical encounters. Diab Care. 2012;35(1):47–9. 43p

    Article  Google Scholar 

  34. Jordan S, Philpin S, Warring J, Cheung WY, Williams J. Percutaneous endoscopic gastrostomies: the burden of treatment from a patient perspective. J Adv Nurs. 2006;56(3):270–81.

    Article  PubMed  Google Scholar 

  35. Atkinson MJ, Sinha A, Hass SL, Colman SS, Kumar RN, Brod M, Rowland CR. Validation of a general measure of treatment satisfaction, the treatment satisfaction questionnaire for medication (TSQM), using a national panel study of chronic disease. Health Qual Life Outcomes. 2004;2(1):12.

    Article  PubMed  PubMed Central  Google Scholar 

  36. Alpern AN, Brumback LC, Ratjen F, Rosenfeld M, Davis SD, Quittner AL. Initial evaluation of the parent cystic fibrosis questionnaire-revised (CFQ-R) in infants and young children. J Cyst Fibros. 2015;14(3):403–11.

    Article  PubMed  Google Scholar 

  37. Beek L, Schappin R, Gooskens R, Huisman J, Jongmans M. Surviving a brain tumor in childhood: impact on family functioning in adolescence. Psycho-Oncology. 2015;24(1):89–94.

    Article  PubMed  Google Scholar 

  38. Brod M, Christensen T, Bushnell D. Maximizing the value of validation findings to better understand treatment satisfaction issues for diabetes. Qual Life Res. 2007;16(6):1053–63.

    Article  PubMed  Google Scholar 

  39. Brod M, Christensen T, Hammer M, Busk AK, Bushnell DM. Examining the ability to detect change using the TRIM-diabetes and TRIM-diabetes device measures. Qual Life Res. 2011;20(9):1513–8.

    Article  PubMed  PubMed Central  Google Scholar 

  40. Colombo C, Daccò V, Alicandro G, Loi S, Mazzi S, Lucioni C, Ravasio R. Cost of cystic fibrosis: analysis of treatment costs in a specialized center in northern Italy. Adv Ther. 2013;30(2):165–75. 111p

    Article  PubMed  Google Scholar 

  41. Garg S, Bailey T, Deluzio T, Pollom D. Preference for a new prefilled insulin pen compared with the original pen. Curr Med Res Opin. 2011;27(12):2323–33. 2311p

    Article  CAS  PubMed  Google Scholar 

  42. Grootscholten C, Snoek FJ, Bijl M, van Houwelingen HC, Derksen RHW, Berden JHM. Health-related quality of life and treatment burden in patients with proliferative lupus nephritis treated with cyclophosphamide or azathioprine/methylprednisolone in a randomized controlled trial. J Rheumatol. 2007;34(8):1699–707. 1699p

    CAS  PubMed  Google Scholar 

  43. Hanke WC, Norlin JM, Mark Knudsen K, Larsson T, Stone S. Quality of life in treatment of AK: treatment burden of ingenol mebutate gel is small and short lasting. J Dermatol Treat. 2016;27(5):450–5.

    Article  Google Scholar 

  44. Janssen DJ, Spruit MA, Schols JM, Wouters EF. A call for high-quality advance care planning in outpatients with severe COPD or chronic heart failure. CHEST. 2011;139(5):1081–8. 1088p

    Article  PubMed  Google Scholar 

  45. Kent EE, Forsythe LP, Yabroff KR, Weaver KE, de Moor JS, Rodriguez JL, Rowland JH: Are survivors who report cancer-related financial problems more likely to forgo or delay medical care? Cancer (0008543X) 2013, 119(20):3710–3717 3718p.

  46. Leung E, Warde P, Jewett M, Panzarella T, O'Malley M, Sweet J, Moore M, Sturgeon J, Gospodarowicz M, Chung P. Treatment burden in stage i seminoma: a comparison of surveillance and adjuvant radiation therapy. BJU Int. 2013;112(8):1088–95.

    Article  PubMed  Google Scholar 

  47. Liu JY, Woloshin S, Laycock WS, Rothstein RI, Finlayson SRG, Schwartz LM. Symptoms and treatment burden of gastroesophageal reflux disease: validating the GERD assessment scales. Arch Intern Med. 2004;164(18):2058–64.

    Article  PubMed  Google Scholar 

  48. Ovayolu Ö, Ovayolu N, Ae D, Özkaya M. The Challenge of Diabetes in the Elderly and Affecting Factors. Holist Nurs Pract. 2015;29(5):272–9. 278p

    Article  PubMed  Google Scholar 

  49. Schmittdiel JA, Raebel MA, Dyer W, Xu S, Goodrich GK, Schroeder EB, Segal JB, Connor PJ O’, Nichols GA, Lawrence JM, et al. Prescription medication burden in patients with newly diagnosed diabetes: a SUrveillance, PREvention, and ManagEment of Diabetes Mellitus (SUPREME-DM) study. J Am Pharm Assoc (2003). 2014;54(4):374–82. 379p

    Article  Google Scholar 

  50. Shah S, Akbari M, Vanga R, Kelly CP, Hansen J, Theethira T, Tariq S, Dennis M, Leffler DA. Patient perception of treatment burden is high in celiac disease compared with other common conditions. Am J Gastroenterol. 2014;109(9):1304–11.

    Article  PubMed  PubMed Central  Google Scholar 

  51. Dewulf J, Vermeulen F, Wanyama S, Thomas M, Proesmans M, Dupont L, De Boeck K. Treatment burden in patients with at least one class IV or v CFTR mutation. Pediatr Pulmonol. 2015;50(12):1230–6.

    Article  PubMed  Google Scholar 

  52. Groeneveld IF, Sosa ES, Pérez M, Fiuza-Luces C, Gonzalez-Saiz L, Gallardo C, López-Mojares LM, Ruiz JR, Lucia A. Health-related quality of life of Spanish children with cystic fibrosis. Qual Life Res. 2012;21(10):1837–45.

    Article  PubMed  PubMed Central  Google Scholar 

  53. Havermans T, Vreys M, Proesmans M, De Boeck C. Assessment of agreement between parents and children on health-related quality of life in children with cystic fibrosis. Child Care Health Dev. 2006;32(1):1–7.

    Article  CAS  PubMed  Google Scholar 

  54. Henry B, Aussage P, Grosskopf C, Goehrs J-M. Development of the cystic fibrosis questionnaire (CFQ) for assessing quality of life in pediatric and adult patients. Qual Life Res. 2003;12(1):63–76.

    Article  PubMed  Google Scholar 

  55. McCullough AR, Tunney MM, Quittner AL, Elborn JS, Bradley JM, Hughes CM. Treatment adherence and health outcomes in patients with bronchiectasis. BMC Pulm Med. 2014:14(1).

  56. Modi AC, Quittner AL. Validation of a disease-specific measure of health-related quality of life for children with cystic fibrosis. J Pediatr Psychol. 2003;28(8):535–46.

    Article  PubMed  Google Scholar 

  57. Sawicki GS, Rasouliyan L, McMullen AH, Wagener JS, McColley SA, Pasta DJ, Quittner AL. Longitudinal assessment of health-related quality of life in an observational cohort of patients with cystic fibrosis. Pediatr Pulmonol. 2011;46(1):36–44.

    Article  PubMed  Google Scholar 

  58. Blanch-Hartigan D, Chawla N, Beckjord EI, Forsythe LP, de Moor JS, Hesse BW, Arora NK. Cancer survivors' receipt of treatment summaries and implications for patient-centered communication and quality of care. Patient Educ Couns. 2015;98(10):1274–9.

    Article  PubMed  PubMed Central  Google Scholar 

  59. Duclos M, Dejager S, Postel-Vinay N, di Nicola S, Quéré S, Fiquet B: Physical activity in patients with type 2 diabetes and hypertension--insights into motivations and barriers from the MOBILE study. Vasc Health Risk Manag 2015, 11:361–371 311p.

  60. Fraser SDS, Roderick PJ, May CR, McIntyre N, McIntyre C, Fluck RJ, Shardlow A, Taal MW. The burden of comorbidity in people with chronic kidney disease stage 3: a cohort study. BMC Nephrology. 2015;16:193–03. 111p

    Article  PubMed  PubMed Central  Google Scholar 

  61. Hock R, Kinsman A, Ortaglia A. Examining treatment adherence among parents of children with autism spectrum disorder. Disabil Health J. 2015;8(3):407–13.

    Article  PubMed  Google Scholar 

  62. Olveira C, Olveira G, Espildora F, Giron RM, Muñoz G, Quittner AL, Martinez-Garcia MA. Validation of a quality of life questionnaire for bronchiectasis: psychometric analyses of the Spanish QOL-B-V3.0. Qual Life Res. 2014;23(4):1279–92.

    Article  PubMed  Google Scholar 

  63. Robertson J, Doran E, Henry DA, Salkeld G. Prescription medicines: decision-making preferences of patients who receive different levels of public subsidy. Health Expect. 2014;17(1):15–26. 12p

    Article  PubMed  Google Scholar 

  64. Wolff J, Boyd C, Wolff JL, Boyd CM. A Look at Person- and Family-Centered Care Among Older Adults: Results from a National Survey [corrected]. JGIM. 2015;30(10):1497–504. 1498p

    Article  PubMed  PubMed Central  Google Scholar 

  65. Dill EJ, Dawson R, Sellers DE, Robinson WM, Sawicki GS. Longitudinal trends in health-related quality of life in adults with cystic fibrosis. CHEST. 2013;144(3):981–9. 989p

    Article  PubMed  PubMed Central  Google Scholar 

  66. Drabe N, Steinert H, Moergeli H, Weidt S, Strobel K, Jenewein J. Perception of treatment burden, psychological distress, and fatigue in thyroid cancer patients and their partners – effects of gender, role, and time since diagnosis. Psycho-Oncology. 2016;25:203–9.

  67. Fried TR, Bradley EH, Towle VR, Allore H. Understanding the treatment preferences of seriously ill patients. N Engl J Med. 2002;346(14):1061–6.

    Article  PubMed  Google Scholar 

  68. Ziaian T, Sawyer MG, Reynolds KE, Carbone JA, Clark JJ, Baghurst PA, Couper JJ, Kennedy D, Martin AJ, Staugas RE, et al. Treatment burden and health-related quality of life of children with diabetes, cystic fibrosis and asthma. J Paediatr Child Health. 2006;42(10):596–600.

    Article  PubMed  Google Scholar 

  69. Avisar A, Lavie-Ajayi M. The burden of treatment: listening to stories of adolescents with ADHD about stimulant medication use. Ethical Hum Psychol Psychiatry: Int J Crit Inq. 2014;16(1):37–50.

    Article  Google Scholar 

  70. Fried TR, Bradley EH. What matters to seriously ill older persons making end-of-life treatment decisions?: A qualitative study. J Palliat Med. 2003;6(2):237–44. 238p

    Article  PubMed  Google Scholar 

  71. Hyland ME, Whalley B, Jones RC, Masoli M. A qualitative study of the impact of severe asthma and its treatment showing that treatment burden is neglected in existing asthma assessment scales. Qual Life Res. 2015;24(3):631–9.

    Article  PubMed  Google Scholar 

  72. Sawicki GS, Heller KS, Demars N, Robinson WM. Motivating adherence among adolescents with cystic fibrosis: youth and parent perspectives. Pediatr Pulmonol. 2015;50(2):127–36.

    Article  PubMed  Google Scholar 

  73. Tunnicliffe DJ, Singh-Grewal D, Chaitow J, Mackie F, Manolios N, Lin M-W, O'Neill SG, Ralph AF, Craig JC, Tong A. Lupus means sacrifices: perspectives of adolescents and young adults with systemic lupus Erythematosus. Arthritis Care Res. 2016;68(6):828–37.

    Article  Google Scholar 

  74. Yorke J, Armstrong I, Bundock S. Impact of living with pulmonary hypertension: a qualitative exploration. Nursing Health Sci. 2014;16(4):454–60.

    Article  Google Scholar 

  75. Hogan A, Bonney M-A, Brien J-A, Karamy R, Aslani P. Factors affecting nebulised medicine adherence in adult patients with cystic fibrosis: a qualitative study. Int J Clin Pharm. 2015;37(1):86–93. 88p

    Article  PubMed  Google Scholar 

  76. Singer JP, Chen J, Katz PP, Blanc PD, Kagawa-Singer M, Stewart AL. Defining novel health-related quality of life domains in lung transplantation: a qualitative analysis. Qual Life Res. 2015;24(6):1521–33. 1513p

    Article  PubMed  Google Scholar 

  77. Levinson M, Mills A, Oldroyd J, Gellie A, Barrett J, Staples M, Stephenson G. The impact of intensive care in a private hospital on patients aged 80 and over: health-related quality of life, functional status and burden versus benefit. Intern Med J. 2016;46(6):694–702.

    Article  CAS  PubMed  Google Scholar 

  78. Quittner AL, Marciel KK, Salathe MA, O'Donnell AE, Gotfried MH, Ilowite JS, Metersky ML, Flume PA, Lewis SA, McKevitt M, et al. A preliminary quality of life questionnaire-bronchiectasis: a patient-reported outcome measure for bronchiectasis. CHEST. 2014;146(2):437–48. 412p

    Article  PubMed  Google Scholar 

  79. Moock J, Hessel F, Ziegeler D, Kubiak T, Kohlmann T. Development and testing of the insulin treatment experience questionnaire (ITEQ). The Patient: Patient-Centered Outcomes Res. 2010;3(1):45–58.

    Article  Google Scholar 

  80. Fried TR, Bradley EH, Towle VR. Assessment of patient preferences: integrating treatments and outcomes. J Gerontol B Psychol Sci Soc Sci. 2002;57B(6):S348–54. 341p

    Article  Google Scholar 

  81. Barrett-Lee P, Bloomfield D, Dougherty L, Harries M, Laing R, Patel H, Walker M. An audit to determine the time taken to administer intravenous bisphosphonate infusions in patients diagnosed with metastatic breast cancer to bone in a hospital setting. Curr Med Res Opin. 2007;23(7):1575–82. 1578p

    Article  PubMed  Google Scholar 

  82. Benner JS, Chapman RH, Petrilla AA, Tang SSK, Rosenberg N, Schwartz JS. Association between prescription burden and medication adherence in patients initiating antihypertensive and lipid-lowering therapy. Am J Health-Sys Pharm. 2009;66(16):1471–7. 1477p

    Article  Google Scholar 

  83. Black JA, Long GH, Sharp SJ, Kuznetsov L, Boothby CE, Griffin SJ, Simmons RK. Change in cardio-protective medication and health-related quality of life after diagnosis of screen-detected diabetes: Results from the ADDITION-Cambridge cohort. Diab Res Clin Pract. 2015;109(1):170–7. 178p

    Article  CAS  Google Scholar 

  84. Blome C, Gosau R, Radtke MA, Reich K, Rustenbach SJ, Spehr C, Thaçi D, Augustin M. Patient-relevant treatment goals in psoriasis. Arch Dermatol Res. 2016;308(2):69–78.

    Article  PubMed  Google Scholar 

  85. Broom R, Du H, Clemons M, Eton D, Dranitsaris G, Simmons C, Ooi W, Cella D. Switching breast cancer patients with progressive bone metastases to third-generation bisphosphonates: measuring impact using the Functional Assessment of Cancer Therapy-Bone Pain. J Pain Symptom Manage. 2009;38(2):244–57. 214p

    Article  CAS  PubMed  Google Scholar 

  86. Brose LS, Bradley C. Psychometric development of the Retinopathy Treatment Satisfaction Questionnaire (RetTSQ). Psychol Health Med. 2009;14(6):740–54. 715p

    Article  PubMed  Google Scholar 

  87. Burcu M, Alexander GC, Ng X, Harrington D. Construct Validity and Factor Structure of Survey-based Assessment of Cost-related Medication Burden. Med Care. 2015;53(2):199–206. 198p

    Article  PubMed  Google Scholar 

  88. De Smedt RHE, Haaijer-Ruskamp FM, Groenier KH, van der Meer K, Jaarsma T. Perceived adverse drug events in heart failure: patients' perceptions and related factors. J Cardiovasc Nurs. 2011;26(3):250–60. 211p

    Article  PubMed  Google Scholar 

  89. Eiser C, Upton P. Costs of caring for a child with cancer: a questionnaire survey. Child Care Health Dev. 2007;33(4):455–9.

    Article  CAS  PubMed  Google Scholar 

  90. Foltz R, Huefner JC. The subjective experience of being medicated in troubled youth: a sample from residential treatment. J Child Fam Stud. 2014;23(4):752–63.

    Article  Google Scholar 

  91. Garfield LD, Dixon D, Nowotny P, Lotrich FE, Pollock BG, Kristjansson SD, Doré PM, Lenze EJ. Common selective serotonin reuptake inhibitor side effects in older adults associated with genetic polymorphisms in the serotonin transporter and receptors: data from a randomized controlled trial. Am J Geriat Psychiatry. 2014;22(10):971–9. 979p

    Article  Google Scholar 

  92. Lau DT, Mercaldo ND, Shega JW, Rademaker A, Weintraub S. Functional decline associated with polypharmacy and potentially inappropriate medications in community-dwelling older adults with dementia. Am J Alzheimers Dis Other Demen. 2011;26(8):606–15.

    Article  PubMed  PubMed Central  Google Scholar 

  93. Lundy E, McMullan D, McShane P, Williams M, Watson M, White C. Polypharmacy and Drug Omissions across Hospices in Northern Ireland. J Palliat Med. 2013;16(11):1446–9. 1444p

    Article  PubMed  Google Scholar 

  94. Miller JE, Nugent CN, Russell LB. Which components of medical homes reduce the time burden on families of children with special health care needs. Health Serv Res. 2015;50(2):440–61. 422p

    Article  PubMed  Google Scholar 

  95. Miller JE, Nugent CN, Russell LB. Risk factors for family time burdens providing and arranging health care for children with special health care needs: lessons from nonproportional odds models. Soc Sci Res. 2015;52:602–14.

    Article  PubMed  Google Scholar 

  96. Mofizul Islam M, McRae IS, Yen L, Jowsey T, Valderas JM. Time spent on health-related activities by senior Australians with chronic diseases: what is the role of multimorbidity and comorbidity? Aust N Z J Public Health. 2015;39(3):277–83.

    Article  PubMed  Google Scholar 

  97. Passik SD, Kirsh KL, Rosenfeld B, McDonald MV, Theobald DE. The changeable nature of patients' fears regarding chemotherapy: implications for palliative care. J Pain Symptom Manage. 2001;21(2):113–20. 118p

    Article  CAS  PubMed  Google Scholar 

  98. Peeters L, Sibille A, Anrys B, Oyen C, Dooms C, Nackaerts K, Wauters I, Vansteenkiste J. Maintenance therapy for advanced non-small-cell lung cancer: a pilot study on patients' perceptions. J Thorac Oncol. 2012;7(8):1291–5. 1295p

    Article  PubMed  Google Scholar 

  99. Robertson TA, Cooke CE, Wang J, Shaya FT, Lee HY. Effect of medication burden on persistent use of lipid-lowering drugs among patients with hypertension. Am J Manag Care. 2008;14(11):710–6. 717p

    PubMed  Google Scholar 

  100. Voorham J, Haaijer-Ruskamp FM, Wolffenbuttel BHR, Stolk RP, Denig P. Cardiometabolic treatment decisions in patients with type 2 diabetes: the role of repeated measurements and medication burden. Qual Saf Health Care. 2010;19(5):411–5. 415p

    CAS  PubMed  Google Scholar 

  101. Wright KD, Asmundson GJG. Brief report: factor structure of the childhood illness attitude scales (CIAS). J Pediatr Psychol. 2005;30(2):213–8.

    Article  PubMed  Google Scholar 

  102. Zan H, Scharff R. The Heterogeneity in Financial and Time Burden of Caregiving to Children with Chronic Conditions. Matern Child Health J. 2015;19(3):615–25. 611p

    Article  PubMed  Google Scholar 

  103. Zeber JE, Miller AL, Copeland LA, McCarthy JF, Zivin K, Valenstein M, Greenwald D, Kilbourne AM. Medication adherence, ethnicity, and the influence of multiple psychosocial and financial barriers. Adm Policy Ment Health Ment Health Serv Res. 2011;38(2):86–95.

    Article  Google Scholar 

  104. Bower P, Harkness E, Macdonald W, Coventry P, Bundy C, Moss-Morris R. Illness representations in patients with multimorbid long-term conditions: Qualitative study. Psychol Health. 2012;27(10):1211–26. 1216p

    Article  PubMed  Google Scholar 

  105. Janke EA, Ramirez ML, Haltzman B, Fritz M, Kozak AT. Patient’s Experience with comorbidity management in primary care: a qualitative study of comorbid pain and obesity. Prim Health Care Res Dev. 2016;17(1):33–41.

  106. Johnston S, Noble H. Factors influencing patients with stage 5 chronic kidney disease to opt for conservative management: a practitioner research study. J Clin Nurs. 2012;21(9/10):1215–22. 1218p

    Article  PubMed  Google Scholar 

  107. Lourens M. An exploration of Xhosa speaking patients’ understanding of cancer treatment and its influence on their treatment experience. J Psychosoc Oncol. 2013;31(1):103–21.

    Article  PubMed  Google Scholar 

  108. Obeidat RF, Dickerson SS, Homish GG, Alqaissi NM, Lally RM. Controlling fear: Jordanian women’s perceptions of the diagnosis and surgical treatment of early-stage breast cancer. Cancer Nurs. 2013;36(6):484–92.

    Article  PubMed  Google Scholar 

  109. Salter ML, Kumar K, Law AH, Gupta N, Marks K, Balhara K, McAdams-DeMarco MA, Taylor LA, Segev DL. Perceptions about hemodialysis and transplantation among African American adults with end-stage renal disease: inferences from focus groups. BMC Nephrol. 2015;16(1):49–49. 41p

    Article  Google Scholar 

  110. Shahid S, Finn L, Bessarab D, Thompson SC. Nowhere to room... nobody told them: logistical and cultural impediments to Aboriginal peoples' participation in cancer treatment. Aust Health Rev. 2011;35(2):235–41. 237p

    Article  PubMed  Google Scholar 

  111. Stajduhar KI, Neithercut J, Chu E, Pham P, Rohde J, Sicotte A, Young K: Thyroid cancer: patients' experiences of receiving iodine-131 therapy. Oncology Nursing Forum 2000, 27(8):1213–1218 1216p.

  112. Taylor RM, Franck LS, Dhawan A, Gibson F. The stories of young people living with a liver transplant. Qual Health Res. 2010;20(8):1076–90.

    Article  PubMed  Google Scholar 

  113. Tjia J, Givens JL, Karlawish JH, Okoli-Umeweni A, Barg FK. Beneath the surface: discovering the unvoiced concerns of older adults with Type 2 diabetes mellitus. Health Educ Res. 2008;23(1):40–52. 13p

    Article  PubMed  Google Scholar 

  114. Clark JA, Bokhour BG, Inui TS, Silliman RA, Talcott JA. Measuring patients' perceptions of the outcomes of treatment for early prostate cancer. Med Care. 2003;41(8):923–36. 914p

    Article  PubMed  Google Scholar 

  115. Tijerina MS. Psychosocial factors influencing Mexican-American women's adherence with hemodialysis treatment. Soc Work Health Care. 2006;43(1):57–74. 18p

    Article  PubMed  Google Scholar 

  116. Shippee ND, Shah ND, May CR, Mair FS, Montori VM. Cumulative complexity: a functional, patient-centered model of patient complexity can improve research and practice. J Clin Epidemiol. 2012;65(10):1041–51.

    Article  PubMed  Google Scholar 

  117. Baatiema L, De-Graft Aikins A, Sav A, Mnatzaganian G, Chan KYC, Somerset S. Barriers to evidence-based acute stroke care in Ghana: a qualitative study on the perspectives of stroke care professionals. BMJ Open Under Rev.

  118. Morrison A, Polisena J, Husereau D, Moulton K, Clark M, Fiander M, Mierzwinski-Urban M, Clifford T, Hutton B, Rabb D. The effect of English-language restriction on systematic review-based meta-analyses: a systematic review of empirical studies. Int J Technol Assess Health Care. 2012;28(2):138–44.

    Article  PubMed  Google Scholar 

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AS led the design of the study and drafted the manuscript. NS and SM contributed to the design and drafting of the manuscript and FM read and critically revised the draft manuscript for important intellectual content. All authors read and approved the final manuscript.

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Sav, A., Salehi, A., Mair, F.S. et al. Measuring the burden of treatment for chronic disease: implications of a scoping review of the literature. BMC Med Res Methodol 17, 140 (2017). https://doi.org/10.1186/s12874-017-0411-8

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