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Challenges of recruiting emergency department patients to a qualitative study: a thematic analysis of researchers’ experiences

Abstract

Background

At times of increasing pressure on emergency departments, and the need for research into different models of service delivery, little is known about how to recruit patients for qualitative research in emergency departments. We report from one study which aimed to collect evidence on patients’ experiences of attending emergency departments with different models of using general practitioners, but faced challenges in recruiting patients. This paper aims to identify and reflect on the challenges faced at all stages of patient recruitment, from identifying and inviting eligible patients, consenting them for participation and finally to engaging them in interviews, and make recommendations based on our learning.

Methods

A thematic analysis was carried out on field-notes taken during research visits and meeting minutes of discussions to review and improve patient recruitment throughout the study.

Results

The following factors influenced the success of patient recruitment in the emergency department setting: complicated or time-consuming electronic health record systems for identifying patients; narrow participant eligibility criteria; limited research nurse support; and lack of face-to-face communication between researchers and eligible patients.

Conclusions

This paper adds to the methodological evidence for improving patient recruitment in different settings, with a focus on qualitative research in emergency departments. Our findings have implications for future studies attempting to recruit patients in similar settings.

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Background

Increasing demand on emergency departments has led to the development of different models of service delivery [1]. Qualitative research in emergency departments is crucial for understanding patients’ experiences and improving patient-centred care, and research is urgently needed to understand the outcomes of these new service models for patients [2]. However, there is little evidence in the literature about effective patient recruitment for qualitative research in emergency department settings [3].

Challenges to patient recruitment and engagement in research can occur at all stages of the process: initially identifying and inviting eligible patients; gaining their consent; and successfully engaging them in data collection [4]. The unscheduled nature of emergency department visits poses specific recruitment challenges, due to the urgent nature of emergency department patient conditions and the demanding work environment that the emergency department presents [5]. Limited success in identifying and inviting eligible patients for research has been associated with poor collaboration between hospital sites and researchers [4]. Hospital staff may have doubts about their involvement in the research if they are unsure of the purpose of the research or have concerns about their level of skill in identifying and inviting eligible patients [6]. Furthermore, narrow eligibility criteria may also contribute to insufficient numbers of patients being identified and invited to participate in research [7].

Once approached to take part, patient participation in research studies is an individual choice based on several factors, such as the purpose of the study, what participation involves, how the findings will be used and who will benefit from the findings [3]. Impersonal communication between researchers and patients (such as postal/ email invitations, or telephone interviews) can hamper attempts to recruit patients, whereas sitting down with a patient and their family to explain the research conveys trust and openness, increasing the likelihood of patients engaging with a study [3, 5, 8]. However, there are practical difficulties associated with obtaining verbal consent in the emergency department setting due to both the nature of the patient’s condition and the busy environment [5]. Telephone reminders to patients following postal invitations have been found to increase patient recruitment [9]. While payment for participation in research is highly debated and can be viewed as presenting ethical challenges [4], a lack of monetary recognition for participation in research has also been identified as a reason for low recruitment rates [5, 8]. Despite these significant challenges in recruiting patients in emergency departments for research, obtaining patient perspectives on their care and experiences in strained settings such as the emergency department are crucial to improving patient care and safety [2].

The literature demonstrates a range of potential barriers and solutions to recruiting patients for research. However, existing research has generally focussed on patient recruitment into large clinical trials, as opposed to smaller-scale qualitative research in defined care settings. We aim to describe the factors which influenced patient recruitment in our study of different general practitioner models in the emergency department setting, by exploring the key challenges and consequent amendments made to our processes. From our learning, we propose recommendations for future research that seeks to recruit emergency department patients for qualitative research.

Methods

Context: setting

Our UK National Institute for Healthcare Research, Health Services and Delivery Research (NIHR DS&DR) funded study, “GPs in EDs” [10], recruited 13 hospital emergency departments in England and Wales as “case study sites”, whereby mixed methods were used to carry out an in-depth evaluation of the effectiveness of different models of general practitioners working in or alongside emergency departments. Three of these 10 case study sites did not have any model of using general practitioners in their emergency department and acted as “control sites” for comparison. We included patient data for this analysis from one further site which had initially been planned as a case study site, but following the research visit it was decided that it did not meet the eligibility criteria for all data to be included in the overall study.

One key objective was to understand the impact on patient experience, by conducting qualitative interviews with patients. Much consideration was given to effective recruitment methods for this qualitative research element, particularly in a hard-to-reach area such as an emergency department. In line with best practice, public and patient members are study Co-Applicants alongside multi-disciplinary and specialist partners [11]. Two public members are also members of our independent Study Steering Committee and have worked alongside stakeholder and academic colleagues to oversee study implementation. All colleagues contributed to decisions throughout the research about enhancing data collection through patient interviews.

Patient recruitment methods in the GPs in EDs study

We aimed to recruit a purposive sample of 60–120 patients from our case study sites, with specific conditions appropriate for management by either emergency department clinicians or general practitioners working in the emergency department setting. We planned to conduct semi-structured telephone interviews, of 20–30-min duration, following the patients’ emergency department visits to explore patients’ reflections on their experiences. During the early phase of our study at a stakeholder event, a group of expert clinicians, policymakers, public contributors and researchers took part in a consensus exercise to choose five “marker” conditions which were deemed the most suitable for a comparative analysis. These marker conditions comprised of a presenting complaint (e.g. back pain) with associated exemplar diagnosis (e.g. sciatica) with a low acuity score (see Appendix). The aim of patient interviews was to understand how patients with certain symptoms or diagnoses were managed in the different services by different staff, in terms of use of acute investigations, observation times and referral to other acute hospital services. We aimed to recruit 5–10 patient participants at each participating case study site, covering the range of marker conditions. Our initial strategy included two recruitment methods to invite patients into the study, discussed below.

Before agreeing to be included as a case study site, departments stated that they were able to support our research, which included the capability and capacity to support patient recruitment. However, due to the demanding setting, researchers often had to negotiate the level of support for each aspect of the study, offering flexibility if departments were unable to give the ideal level of support needed for identifying and inviting patients. It was important that we were flexible with what we requested of departments, as we needed to recruit sufficient and appropriate departments as case study sites and collect a range of data via different research methods for all aspects of the study (e.g. observations and staff interviews).

Initial recruitment method 1: inviting patients via post

The first method aimed to recruit patients via postal invitations sent out by a member of hospital staff (i.e. a NHS-appointed delivery research nurse), who would use the electronic health record (EHR) system to identify up to 50 patients who had attended the case study site emergency department in the last 3 months, with the marker conditions in our recruitment framework (see Appendix). Eligible patients were mailed a patient study pack containing: a study invitation letter, a participant information sheet, two consent forms and a stamped and addressed envelope. The patient information sheet asked patients to sign and return their consent forms to the university if they wished to take part in a telephone interview. Once these were received, the study team would contact the patient by telephone to arrange an interview.

Initial recruitment method 2: inviting patients at the emergency department

The second method aimed to recruit patients during the research visit in the case study site emergency department. A member of hospital staff (i.e. a research nurse) would identify up to 50 eligible patients when they were in the emergency department, informing them of the study and providing them with the patient study pack. Patients would be asked to take home the materials they had been given and consider whether they would like to take part, returning the consent form (to the university) if they wished to participate. Once consent forms were received by the study team, the same process for contacting patients would be followed as method 1.

Amendments to patient recruitment processes

Due to low initial patient recruitment figures from both methods, the study team sought advice from study co-applicants, study steering committee members and public and patient involvement representatives, on potential changes to the recruitment methods. The following amendments were made in May 2018 to help with patient recruitment:

  • Inviting up to 100 participants at each case study site rather than 50, to increase returns.

  • Printing study invitation letters on hospital headed paper rather than Cardiff University headed paper so that patients were familiar with the sender.

  • Giving participants a quicker and easy option of registering their interest by texting ‘yes’ to a mobile number, to then be followed up with a phone call from a member of the research team to request the consent form and arrange an interview.

  • Specifying the desired marker conditions on the participant information sheet so that patients could recognise their eligibility for the study.

  • Offering an incentive of a £20 high-street shopping voucher to participants who were interviewed.

Methods of analysis of patient recruitment methods

After identifying problems with patient recruitment, a thematic analysis [12] was used on two data sources to analyse the processes, procedures and experiences of recruiting patients into the GPs in EDs study, to understand reasons for low patient recruitment. The data sources came from study data (researchers’ field notes from research visits to case study sites) and documents from a range of study meetings (progress reports and meeting minutes).

Data sources

Field notes

The researchers (ME and AC) each produced one set of field notes at each case study site, totalling 26 sets of in-depth field notes. Research visits lasted 2 to 3 days at each case study site, the purpose of which was to gather information about the process of presentation, triage, assessment, investigation/ treatment/ referral, discharge review and waiting times in each hospital, through interviews with staff and field notes. Research visits were also intended to facilitate both methods of patient recruitment: to liaise with members of staff to arrange for patients to be invited via post (method 1), or to invite patients in the emergency department at the time of the research visit (method 2). Field notes were taken throughout each day and as well as capturing the data above, contained reflections on the practical difficulties of the research visit, such as recruiting patients.

Progress reports and meeting minutes

Data came from weekly progress updates over the course of 16 months and minutes from 12 study co-applicant meetings; 3 study steering committee meetings and; 4 patient and public involvement meetings. Data included progress updates on patient recruitment figures (numbers of patients invited, consented and subsequently interviewed), experiential anecdotes from researchers about the process of recruiting patients, suggestions from colleagues regarding the reasons for low recruitment and possible ways to improve recruitment.

Data analysis

Using NVivo 12 (QSR International V.12), a thematic analysis framework [12, 13] was initially established by coding field note data into themes and sub-themes relating to practical challenges faced by the researchers in recruiting patients at case study sites. This coding framework was applied to the data from progress reports and meetings minutes, and was subsequently expended to include themes and sub-themes relating to the processes and progress of recruiting patients, and the suggested changes to patient recruitment from colleagues. Throughout the thematic analysis, themes were reviewed, modified and developed [12, 14] and meetings were held with both researchers to validate themes.

These thematic analyses allowed us to understand the challenges facing patient recruitment for qualitative research in the emergency department setting, the process and progress of recruiting patients throughout the study via different research methods, and the suggested changes to recruitment procedures made by colleagues. These analyses can inform recommendations for future research.

Results

Total number of patients invited, consented and interviewed

In total, 748 patients were invited to take part in a telephone interview for the study, 43 (6%) patients consented and 24 (3%) were subsequently interviewed, with 19 patients either withdrawing or being uncontactable for interview after consenting to take part. We successfully recruited patients at nine case study sites. Following the first research visit to a ‘control’ site (hospitals without a model of using general practitioners at the emergency department), the decision was made not to recruit patients at control sites, therefore no patients were recruited at the following two control sites. We were unable to recruit patients from two case study sites because of limited staff availability (such as research nurses, clinicians or administrators) and local research and development protocols which restricted data sharing. The number of patients invited via both methods at each case study site is shown in Table 1.

Table 1 Total number of patients invited via both methods

The amendments made to improve patient recruitment did not have a notable impact on patient recruitment. Overall, 304 patients were invited before the amendments, resulting in 5 interviews (2%) and 444 patients were invited after the amendments, resulting in 19 interviews (4%). Table 2 shows the number of patients interviewed from each marker condition.

Table 2 Number of patients interviewed for each marker condition

Patient recruitment for method 1

Some case study sites were unable to allocate research nurse support to invite patients to the study via post (n = 6), and we could not use this recruitment method at these sites. From those case study sites that were able to assist with inviting patients by post (n = 8), Fig. 1 shows the number of patients who were invited, consented and interviewed:

Fig. 1
figure1

Recruitment for Method 1

Patient recruitment for method 2

Many case study sites (n = 8) were not able to invite patients in the emergency department during the research visit. From those case study sites who were able to invite patients in the emergency department (n = 6), Fig. 2 shows the number of patients who were invited, consented and interviewed:

Fig. 2
figure2

Recruitment for Method 2

Despite the small sample size for recruitment method 2, the success rate was higher with recruitment method 2 (inviting patients in person; n = 33.3%) than method 1 (inviting patients via post; n = 2.5%).

Findings following thematic analysis

The following themes were identified as contributing to low patient recruitment in the GPs in EDs study: complicated or time-consuming electronic health record systems; narrow eligibility criteria; limited research nurse support; and lack of face-to-face communication between researchers and patients. These themes are described in Tables 3, 4, 5, and 6, with suggestions to improve recruitment for future research.

Table 3 Complicated or time-consuming electronic health record systems
Table 4 Narrow eligibility criteria
Table 5 Limited research nurse support
Table 6 Lack of face-to-face communication between researchers and patients

Discussion

Principal findings

We found that the following interdependent and interacting factors contributed to low patient recruitment for this qualitative study in the emergency department setting: complicated or time-consuming electronic health record systems; narrow eligibility criteria; limited contact with/ availability of research nurses or other support staff; and a lack of face-to-face communication between researchers and patients. Amendments made to our methods did not substantially improve recruitment: 2% of patients invited before amendments were interviewed and 4% of patients invited after amendments were interviewed.

Narrow eligibility criteria limited the number of patients who could be identified and invited. This made searching for eligible patients on already complicated electronic health record systems even more time consuming. Both factors made our recruitment processes time consuming, meaning research nurses could not always commit enough time to supporting patient recruitment, making engagement in patient recruitment less feasible for case study sites. Limited availability of research nurses was also due to the small size of our study, as departments are more likely to allocate resources to large clinical trials and commercial studies where more patients will be recruited and therefore more accruals (monetary credits) will be obtained. These factors all interacted to limit the number of patients identified and invited to take part in the study.

In terms of recruiting patients once they had been invited, we believe that a lack of face-to-face communication between researchers and patients meant that invitations to participate were impersonal, easily ignored and could lead to patient wariness about participation.

Strengths and limitations

The experience reported in this paper is helpful for understanding the reasons for low patient recruitment in the GPs in EDs study and other studies in similar settings. By using qualitative methods of evaluation to analyse meeting minutes, in-depth field notes and recruitment methods, figures and amendments, this paper gives an insight into the reasons for low patient recruitment and highlights ways to improve patient recruitment in future studies using a similar setting. However, we were unable to obtain data from those who did not respond to invitations or consented but then declined, to explore these patients’ reasons for not participating. The findings in this paper are based on one study’s experiences and further evidence is needed.

Context of other literature

The findings from this paper fit with the current literature surrounding patient recruitment in research, but highlight the need for further research into patient recruitment for qualitative research in the emergency department setting. Studies have found that narrow eligibility criteria can restrict patient recruitment, as this limits the number of patients who can be invited and thus interviewed, as well as slowing down and often complicating the process of identifying eligible patients [7]. This is consistent with our experience in the GPs in EDs study, as it was often difficult to find suitable numbers of eligible patients within time constraints available to us, and broadening the eligibility criteria would have led to more patients being invited and therefore recruited [7].

Studies have identified that if preparatory work (e.g. helping to screen and identifying appropriate patients, preparing appropriate recruitment materials, informing relevant staff members about the study) can be carried out by study members (e.g. research staff, study support staff), then the burden on hospital staff is lessened, which can be key to ensuring successful engagement of staff and recruitment of patients [4]. Furthermore, having other priorities and not having much time to dedicate to a study is a known barrier to hospital staff being able to help with patient recruitment [6]. In the GPs in EDs study, support of research nurses or other staff at hospitals was key to identifying and inviting appropriate numbers of patients, and thus patient recruitment was highest at those case study sites which were able to allocate the most support. If higher levels of support had been available at all case study sites, then the GPs in EDs study may have achieved higher patient recruitment numbers. This may itself have been achieved through further preparatory work by the research team before a research visit, or hospital staff being allocated additional time for recruitment during a visit.

Face-to-face communication is valued by research participants and informing patients (and their family members) of the research in person allows rapport to be built, in an open and trustful manner, and can increase the likelihood of the patient engaging in the research [3, 8]. Again, this is supported by our experiences, as we found higher participation among patients invited in person rather than by post, albeit with a small sample size. The wider body of literature, however, recognises the difficulty of face-to-face communication between researchers and patients in emergency care settings, as in the GPs in EDs study, particularly due to the high demand and business of emergency departments and the unscheduled nature of patient attendance to emergency departments [5]. While the using telephone reminders may have increased patient recruitment [9], the ethical implications of contacting patients via telephone prior to the patient giving consent to be contacted would need serious consideration.

Previous research has successfully used “informal interviewing” as a practical technique for gaining patient perspectives, in person, in busy emergency departments [15]. Informal interviewing involves informal conversations with participants to enable more open discussions than formal interviewing, making the process of gathering data on patient experience easier and faster than formal interviewing methods [15].

Future research

While we have been able to identify key factors which restricted the ability to identify and invite patients into the study, challenges were faced in terms of identifying patients’ reasons for declining participation once invited. Future research could explore emergency department patients’ possible reasons for not taking part in research, to develop patient recruitment methods that encourage participation. Furthermore, the learning from this paper comes only from one study’s experiences and could be formally evaluated in further larger studies or clinical trials. Further research is also needed into how researchers can best work with patient and public involvement representatives to increase patient recruitment in different settings [16].

Conclusion

This paper adds to the methodological evidence for improving patient recruitment in different settings, with a focus on qualitative research in emergency departments. We found that patient recruitment in the emergency department setting was influenced by slow or time-consuming electronic health record systems, narrow eligibility criteria, the support (or lack of support) from research nurses or other staff member; and lack of face-to-face communication between researchers and patients. These findings can be used to inform methods planned by researchers attempting to recruit emergency department patients for future qualitative research.

Availability of data and materials

The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.

Abbreviations

ED:

Emergency department

EHR:

Electronic health record

GP:

General practitioner

GPs in EDs:

General Practitioners in Emergency Departments

HS&DR:

Health Services and Delivery Research

NHS:

National Health Service

NIHR:

National Institute for Health Research

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Acknowledgements

The authors would like to thank patient and public involvement representatives Julie Hepburn and Barbara Harrington for their contribution towards this work. Also, for their support in this work, the GPs in EDs Study Steering Committee members Richard Byng, Kirsty Challen, Shanaz Dorkenoo, Steve Goodacre, Gill Lancaster, Martin Rolph and Ed Wilson.

Funding

This study is funded by the National Institute for Health Research (NIHR) Health Services and Delivery Research (HS&DR) Programme, project number 15/145/04. The views expressed are those of the authors and not necessarily those of the NIHR or the Department of Health and Social Care.

Author information

Affiliations

Authors

Contributions

DP was a major contributor to design and conception of the work, analysis of data and writing the manuscript. ME, AC and AE contributed to the design and conception of the work, and were major contributors in writing the manuscript. TH contributed to the analysis and interpretation of data, and FD, BE, ACS, PH, NS and TR contributed to revising the manuscript. The author(s) read and approved the final manuscript.

Corresponding author

Correspondence to Delyth Price.

Ethics declarations

Ethics approval and consent to participate

Ethical approval was granted for this study entitled ‘A realist evaluation of effectiveness, safety, patient experience and system implications of different models of using GPs in or alongside Emergency Departments’ by Cardiff University School of Medicine Research Ethics Committee on 29th June 2017.

Fully informed written consent to participate was obtained from all participants.

Consent for publication

Not applicable.

Competing interests

The authors declare that they have no competing interests.

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Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Appendix

Appendix

Patient Recruitment Guide

Patient recruitment pathway

Please use the table below to help us identify 50 patients in total – 10 for each marker condition (5 seen by GP, 5 seen by ED clinicians).

Guidance for selecting patients to invite to interviews

  • Please can you use the patient recruitment guide to find us 50 patients with the listed chief complaints that have a diagnosis listed against that complaint (it’s really important that we only have a diagnosis that is listed in the column). If you have capacity to look for more patients we can send out up to 100 letters if the response rate is low. We can initially send out 50 and then send more if we need to.

  • Before the visit, we will email you our ‘study invitation letter’ which will need to be printed on your hospital’s headed paper

  • When you receive our patient packs, please add the study invitation letter to the front of the packs, with the patient name written at the top of the letter.

  • We need to send letters to five patients with each complaint and matching diagnosis that have been seen by a member of the primary care team (GP or ANP) please ask the ED to provide you with a list of GPs or ANPs that are working in the primary care service.

  • We also need to send letters to five patients for each complaint that have been seen by an ED doctor or ENP. It will be useful to know who the ENPs are and who the doctors are too.

  • We only need to know the type of practitioner that saw the patient, we do not need to know their name.

  • We are looking for patients who have visited the ED in the last 3 months

  • We are aware that some of our complaints might not be seen by many GPs e.g. chest pain so it might be difficult to find enough patients

  • If acuity scores are used we are looking for patients who score 3,4 or 5 (not 1&2 so not patients who have life threatening symptoms)

  • We have excluded patients where it is noted that they may have serious mental health problems and dementia. We have also excluded patients who do not speak English as a first language.

  • We try to get a mix of gender and ages (we do not have any upper age limit on adults, for children with a fever we want children under 10).

  • Please record details of patients on the spreadsheet and email back to us – It might be useful for you to keep another version for yourself with more patient details on e.g. address and patient ID

  • Michelle can meet with you to help get started with screening and help with organising the letters to get sent out.

  • If you have any questions please contact Michelle Edwards by email- Edwardsm28@cardiff

Marker condition Time period ECDS Acuity Chief complaint Patient age Exemplar diagnoses Seen by
Child < 10 with a fever Last 3 months 3,4,5 Fever Less than 10 Infectious disease Respiratory Upper respiratory tract infection
Surgical ENT Otitis media/ear infection
Surgical ENT Tonsillitis
5-10GPs
5–10 ED staff
Cough and breathlessness Last 3 months 3,4,5 Short of breath
Difficulty breathing
Noisy breathing
Coughing up blood
Any Infectious disease Respiratory Lower respiratory tract infection
Infectious disease Respiratory Bronchopneumonia
Infectious disease Respiratory Lobar pneumonia
5–10 GPs
5–10 ED staff
Abdominal pain Last 3 months 3,4,5 Abdominal pain Any Infectious disease GU/GI Infectious gastroenteritis
Infectious disease GU/GI Urinary tract infection
5-10GPs
5–10 ED staff
Back pain Last 3 months 3,4,5 Pain in back/trunk (no injury) Any Soft tissue injury/wound Muscle injury Lower back
Soft tissue injury/wound Sprain/ligament injury Lumbar spine
Musculoskeletal Orthopaedics Sciatica
5–10 GPs
5–10 ED staff
Chest pain Last 3 months 3,4,5 Chest pain Any Medical Gastroenterology Oesophageal spasm
Medical Gastroenterology Gastro-oesophageal reflux
Medical Gastroenterology Gastritis
Musculoskeletal Rheumatology Costochondritis
Medical Respiratory Pulmonary embolism
5–10 GPs
5–10 ED staff

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Price, D., Edwards, M., Carson-Stevens, A. et al. Challenges of recruiting emergency department patients to a qualitative study: a thematic analysis of researchers’ experiences. BMC Med Res Methodol 20, 151 (2020). https://doi.org/10.1186/s12874-020-01039-2

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Keywords

  • Patient recruitment challenges
  • Qualitative research
  • Emergency department
  • Patient experience