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  1. Content type: Research article

    There are detailed reviews about different recruitment strategies, but not with regard to differences between recruitment of hospital-based versus office-based physicians. Within this study, the two different ...

    Authors: S. R. Zeissig, V. Weyer-Elberich, K. Emrich, H. Binder, S. Fischbeck, B. H. Imruck, P. Friedrich-Mai, M. E. Beutel and M. Blettner

    Citation: BMC Medical Research Methodology 2017 17:150

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  2. Content type: Research article

    It is important to quantify the dose response for a drug in phase 2a clinical trials so the optimal doses can then be selected for subsequent late phase trials. In a phase 2a clinical trial of new lead drug be...

    Authors: Feng Liu, Stephen J. Walters and Steven A. Julious

    Citation: BMC Medical Research Methodology 2017 17:149

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  3. Content type: Research Article

    The use of health-related quality of life (HRQoL) as an endpoint in cancer clinical trials is growing rapidly. Hence, research into the statistical approaches used to analyze HRQoL data is of major importance,...

    Authors: Antoine Barbieri, Jean Peyhardi, Thierry Conroy, Sophie Gourgou, Christian Lavergne and Caroline Mollevi

    Citation: BMC Medical Research Methodology 2017 17:148

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  4. Content type: Research article

    It is challenging for current statistical models to predict clinical progression of Parkinson’s disease (PD) because of the involvement of multi-domains and longitudinal data.

    Authors: Ming Wang, Zheng Li, Eun Young Lee, Mechelle M. Lewis, Lijun Zhang, Nicholas W. Sterling, Daymond Wagner, Paul Eslinger, Guangwei Du and Xuemei Huang

    Citation: BMC Medical Research Methodology 2017 17:147

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  5. Content type: Research article

    Several statistical approaches have been proposed to assess and correct for exposure measurement error. We aimed to provide a critical overview of the most common approaches used in nutritional epidemiology.

    Authors: Derrick A. Bennett, Denise Landry, Julian Little and Cosetta Minelli

    Citation: BMC Medical Research Methodology 2017 17:146

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  6. Content type: Research article

    The reproducibility of research is essential to rigorous science, yet significant concerns of the reliability and verifiability of biomedical research have been recently highlighted. Ongoing efforts across sev...

    Authors: Leslie D. McIntosh, Anthony Juehne, Cynthia R. H. Vitale, Xiaoyan Liu, Rosalia Alcoser, J. Christian Lukas and Bradley Evanoff

    Citation: BMC Medical Research Methodology 2017 17:143

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  7. Content type: Research article

    The clinical research enterprise is not producing the evidence decision makers arguably need in a timely and cost effective manner; research currently involves the use of labor-intensive parallel systems that ...

    Authors: Kevin P. Weinfurt, Adrian F. Hernandez, Gloria D. Coronado, Lynn L. DeBar, Laura M. Dember, Beverly B. Green, Patrick J. Heagerty, Susan S. Huang, Kathryn T. James, Jeffrey G. Jarvik, Eric B. Larson, Vincent Mor, Richard Platt, Gary E. Rosenthal, Edward J. Septimus, Gregory E. Simon…

    Citation: BMC Medical Research Methodology 2017 17:144

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  8. Content type: Research article

    The requirement to obtain written informed consent may undermine the potential of pragmatic randomized clinical trials (pRCTs) to improve evidence-based care. This requirement could compromise trials statistic...

    Authors: Rafael Dal-Ré, Antonio J. Carcas, Xavier Carné and David Wendler

    Citation: BMC Medical Research Methodology 2017 17:145

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  9. Content type: Research article

    We sought to understand the main ethical considerations when conducting clinical trials in the prehospital ambulance based setting.

    Authors: Stephanie Armstrong, Adele Langlois, Despina Laparidou, Mark Dixon, Jason P. Appleton, Philip M. Bath, Helen Snooks and A. Niroshan Siriwardena

    Citation: BMC Medical Research Methodology 2017 17:142

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  10. Content type: Research article

    The ACE-III, a gold standard for screening cognitive impairment, is restricted by language and culture, with no uniform set of guidelines for its adaptation. To develop guidelines a compilation of all the adap...

    Authors: Nadine Mirza, Maria Panagioti, Muhammad Wali Waheed and Waquas Waheed

    Citation: BMC Medical Research Methodology 2017 17:141

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  11. Content type: Correspondence

    Focused ethnography is an applied and pragmatic form of ethnography that explores a specific social phenomenon as it occurs in everyday life. Based on the literature a problem-focused research question is form...

    Authors: A.P. Bikker, H. Atherton, H. Brant, T. Porqueddu, J.L. Campbell, A. Gibson, B. McKinstry, C. Salisbury and S. Ziebland

    Citation: BMC Medical Research Methodology 2017 17:139

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  12. Content type: Research article

    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...

    Authors: Adem Sav, Asiyeh Salehi, Frances S. Mair and Sara S. McMillan

    Citation: BMC Medical Research Methodology 2017 17:140

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  13. Content type: Debate

    The goal of medical research is to develop interventions that are in some sense superior, with respect to patient outcome, to interventions currently in use. Similarly, the goal of research in methodological c...

    Authors: Anne-Laure Boulesteix, Rory Wilson and Alexander Hapfelmeier

    Citation: BMC Medical Research Methodology 2017 17:138

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  14. Content type: Research article

    Rich literature has reported that there exists a nonlinear association between temperature and mortality. One important feature in the temperature-mortality association is the minimum mortality temperature (MM...

    Authors: Whanhee Lee, Ho Kim, Sunghee Hwang, Antonella Zanobetti, Joel D. Schwartz and Yeonseung Chung

    Citation: BMC Medical Research Methodology 2017 17:137

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  15. Content type: Research article

    Gastrointestinal Stromal Tumours (GISTs) are the most common mesenchymal tumours. Currently, different pharmacological and surgical options are used to treat localised and metastatic GISTs, although this resea...

    Authors: Mónica Ballesteros, Nadia Montero, Antonio López-Pousa, Gerard Urrútia, Ivan Solà, Gabriel Rada, Hector Pardo-Hernandez and Xavier Bonfill

    Citation: BMC Medical Research Methodology 2017 17:135

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  16. Content type: Research article

    Data confidentiality and shared use of research data are two desirable but sometimes conflicting goals in research with multi-center studies and distributed data. While ideal for straightforward analysis, conf...

    Authors: P. Saha-Chaudhuri and C.R. Weinberg

    Citation: BMC Medical Research Methodology 2017 17:136

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  17. Content type: Research article

    Longitudinal studies using data collected as part of usual care risk providing biased results if visit times are related to the outcome of interest. Statistical methods for mitigating this bias are available b...

    Authors: Delaram Farzanfar, Asmaa Abumuamar, Jayoon Kim, Emily Sirotich, Yue Wang and Eleanor Pullenayegum

    Citation: BMC Medical Research Methodology 2017 17:133

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  18. Content type: Research article

    Multiple imputation is a popular approach to handling missing data in medical research, yet little is known about its applicability for estimating the relative risk. Standard methods for imputing incomplete bi...

    Authors: Thomas R. Sullivan, Katherine J. Lee, Philip Ryan and Amy B. Salter

    Citation: BMC Medical Research Methodology 2017 17:134

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  19. Content type: Research article

    Knowing about predictors of attrition in a panel is important to initiate early measures against loss of participants. We investigated attrition in both early and late phase of an online panel with special foc...

    Authors: Nicole Rübsamen, Manas K. Akmatov, Stefanie Castell, André Karch and Rafael T. Mikolajczyk

    Citation: BMC Medical Research Methodology 2017 17:132

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  20. Content type: Research article

    The Barthel Index (BI) is a measure of independence in activities of daily living (ADL). In the modified Barthel Index (MBI), a five-point system replaced the original two or three or four point rating system....

    Authors: Tomoko Ohura, Kimitaka Hase, Yoshie Nakajima and Takeo Nakayama

    Citation: BMC Medical Research Methodology 2017 17:131

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  21. Content type: Research article

    There is a great need for high quality clinical research for children. The European Pediatric Regulation aimed to improve the quality of clinical trials in order to increase the availability of treatments for ...

    Authors: Isabelle Gautier, Perrine Janiaud, Nelly Rollet, Nicolas André, Michel Tsimaratos, Catherine Cornu, Salma Malik, Stéphanie Gentile and Behrouz Kassaï

    Citation: BMC Medical Research Methodology 2017 17:130

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  22. Content type: Research article

    The common frequentist approach is limited in providing investigators with appropriate measures for conducting a new trial. To answer such important questions and one has to look at Bayesian statistics.

    Authors: David J. Biau, Samuel Boulezaz, Laurent Casabianca, Moussa Hamadouche, Philippe Anract and Sylvie Chevret

    Citation: BMC Medical Research Methodology 2017 17:128

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  23. Content type: Technical advance

    Multiple imputation is a recommended method to handle missing data. For significance testing after multiple imputation, Rubin’s Rules (RR) are easily applied to pool parameter estimates. In a logistic regressi...

    Authors: Iris Eekhout, Mark A. van de Wiel and Martijn W. Heymans

    Citation: BMC Medical Research Methodology 2017 17:129

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  24. Content type: Research article

    Aspirin has been considered to be beneficial in preventing cardiovascular diseases and cancer. Several pharmaco-epidemiology cohort studies have shown protective effects of aspirin on diseases using various st...

    Authors: In Sung Cho, Ye Rin Chae, Ji Hyeon Kim, Hae Rin Yoo, Suk Yong Jang, Gyu Ri Kim and Chung Mo Nam

    Citation: BMC Medical Research Methodology 2017 17:126

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  25. Content type: Research article

    Estimating correlation coefficients among outcomes is one of the most important analytical tasks in epidemiological and clinical research. Availability of multivariate longitudinal data presents a unique oppor...

    Authors: Feng Gao, J. Philip Miller, Chengjie Xiong, Jingqin Luo, Julia A. Beiser, Ling Chen and Mae O. Gordon

    Citation: BMC Medical Research Methodology 2017 17:124

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  26. Content type: Research article

    Self-interviews, where the respondent rather than the interviewer enters answers to questions, have been proposed as a way to reduce social desirability bias associated with interviewer-led interviews. Compute...

    Authors: Guy Harling, Dumile Gumede, Tinofa Mutevedzi, Nuala McGrath, Janet Seeley, Deenan Pillay, Till W. Bärnighausen and Abraham J. Herbst

    Citation: BMC Medical Research Methodology 2017 17:125

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  27. Content type: Research article

    The objective consensus methodology has recently been applied in consensus finding in several studies on medical decision-making among clinical experts or guidelines. The main advantages of this method are an ...

    Authors: Cédric M. Panje, Markus Glatzer, Joscha von Rappard, Christian Rothermundt, Thomas Hundsberger, Valentin Zumstein, Ludwig Plasswilm and Paul Martin Putora

    Citation: BMC Medical Research Methodology 2017 17:123

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  28. Content type: Research article

    This cohort study examined the impact of the lengths of lookback and confirmation periods as well as the definition of confirmatory events on the number of incident cancer cases identified and age-standardized...

    Authors: Jonas Czwikla, Kathrin Jobski and Tania Schink

    Citation: BMC Medical Research Methodology 2017 17:122

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  29. Content type: Research article

    Dentine hypersensitivity (DH) affects people’s quality of life (QoL). However changes in the internal meaning of QoL, known as Response shift (RS) may undermine longitudinal assessment of QoL. This study aimed...

    Authors: Carolina Machuca, Mario V. Vettore, Marta Krasuska, Sarah R. Baker and Peter G. Robinson

    Citation: BMC Medical Research Methodology 2017 17:120

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  30. Content type: Research article

    Decisionmakers and guideline developers demand rapid syntheses of the evidence when time sensitive evidence-informed decisions are required. A potential trade-off of such rapid reviews is that their results ca...

    Authors: Gernot Wagner, Barbara Nussbaumer-Streit, Judith Greimel, Agustín Ciapponi and Gerald Gartlehner

    Citation: BMC Medical Research Methodology 2017 17:121

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  31. Content type: Research article

    Illness perceptions involve the personal beliefs that patients have about their illness and may influence health behaviours considerably. Since an instrument to measure these perceptions for Malay population i...

    Authors: Boon-How Chew, Rimke C. Vos, Monique Heijmans, Sazlina Shariff-Ghazali, Aaron Fernandez and Guy E. H. M. Rutten

    Citation: BMC Medical Research Methodology 2017 17:118

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  32. Content type: Research article

    Information about design, implementation, monitoring and evaluation is central to understand the impact of programmes within the field of sexual, reproductive, maternal, newborn, child and adolescent health (S...

    Authors: Anna E. Kågesten, Özge Tunçalp, Anayda Portela, Moazzam Ali, Nhan Tran and A. Metin Gülmezoglu

    Citation: BMC Medical Research Methodology 2017 17:117

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  33. Content type: Research article

    Each year over five million people develop chronic non-malignant pain and can experience healthcare as an adversarial struggle. The aims of this study were: (1) to bring together qualitative evidence syntheses...

    Authors: Fran Toye, Kate Seers, Erin Hannink and Karen Barker

    Citation: BMC Medical Research Methodology 2017 17:116

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  34. Content type: Research Article

    Random survival forest (RSF) models have been identified as alternative methods to the Cox proportional hazards model in analysing time-to-event data. These methods, however, have been criticised for the bias ...

    Authors: Justine B. Nasejje, Henry Mwambi, Keertan Dheda and Maia Lesosky

    Citation: BMC Medical Research Methodology 2017 17:115

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  35. Content type: Research article

    Missing data is a common problem in epidemiological studies, and is particularly prominent in longitudinal data, which involve multiple waves of data collection. Traditional multiple imputation (MI) methods (f...

    Authors: Anurika Priyanjali De Silva, Margarita Moreno-Betancur, Alysha Madhu De Livera, Katherine Jane Lee and Julie Anne Simpson

    Citation: BMC Medical Research Methodology 2017 17:114

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  36. Content type: Research article

    More patient-specific medical care is expected as more is learned about variations in patient responses to medical treatments. Analytical tools enable insights by linking treatment responses from different typ...

    Authors: Joe Alexander, Roger A. Edwards, Alberto Savoldelli, Luigi Manca, Roberto Grugni, Birol Emir, Ed Whalen, Stephen Watt, Marina Brodsky and Bruce Parsons

    Citation: BMC Medical Research Methodology 2017 17:113

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  37. Content type: Research Article

    The analysis of perinatal outcomes often involves datasets with some multiple births. These are datasets mostly formed of independent observations and a limited number of clusters of size two (twins) and maybe...

    Authors: Odile Sauzet and Janet L. Peacock

    Citation: BMC Medical Research Methodology 2017 17:110

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  38. Content type: Research Article

    The Matchpoint trial aims to identify the optimal dose of ponatinib to give with conventional chemotherapy consisting of fludarabine, cytarabine and idarubicin to chronic myeloid leukaemia patients in blastic ...

    Authors: Kristian Brock, Lucinda Billingham, Mhairi Copland, Shamyla Siddique, Mirjana Sirovica and Christina Yap

    Citation: BMC Medical Research Methodology 2017 17:112

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  39. Content type: Research Article

    In a random effects meta-analysis model, true treatment effects for each study are routinely assumed to follow a normal distribution. However, normality is a restrictive assumption and the misspecification of ...

    Authors: Yusuke Yamaguchi, Kazushi Maruo, Christopher Partlett and Richard D. Riley

    Citation: BMC Medical Research Methodology 2017 17:109

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  40. Content type: Research article

    The application of adaptive design methodology within a clinical trial setting is becoming increasingly popular. However the application of these methods within trials is not being reported as adaptive designs...

    Authors: Pankaj Mistry, Janet A Dunn and Andrea Marshall

    Citation: BMC Medical Research Methodology 2017 17:108

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  41. Content type: Research Article

    Joint models of longitudinal and time-to-event data are increasingly used to perform individual dynamic prediction of a risk of event. However the difficulty to perform inference in nonlinear models and to cal...

    Authors: Solène Desmée, France Mentré, Christine Veyrat-Follet, Bernard Sébastien and Jérémie Guedj

    Citation: BMC Medical Research Methodology 2017 17:105

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  42. Content type: Debate

    The standard definition for protocol adherence is the proportion of all scheduled doses that are delivered. In clinical research, this definition has several limitations when evaluating protocol adherence in t...

    Authors: F. Lauzier, N. K. Adhikari, A. Seely, K. K. Y. Koo, E. P. Belley-Côté, K. E. A. Burns, D. J. Cook, F. D’Aragon, B. Rochwerg, M. E. Kho, S. J. W. Oczkowksi, E. H. Duan, M. O. Meade, A. G. Day and F. Lamontagne

    Citation: BMC Medical Research Methodology 2017 17:106

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  43. Content type: Technical advance

    The sample size required to power a study to a nominal level in a paired comparative diagnostic accuracy study, i.e. studies in which the diagnostic accuracy of two testing procedures is compared relative to a...

    Authors: Gareth P. J. McCray, Andrew C. Titman, Paula Ghaneh and Gillian A. Lancaster

    Citation: BMC Medical Research Methodology 2017 17:102

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  44. Content type: Research article

    Network meta-analysis overcomes the limitations of traditional pair-wise meta-analysis by incorporating all available evidence into a general statistical framework for simultaneous comparisons of several treat...

    Authors: Yu-Kang Tu and Yun-Chun Wu

    Citation: BMC Medical Research Methodology 2017 17:104

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  45. Content type: Research article

    Prognostic models often show poor performance when applied to independent validation data sets. We illustrate how treatment use in a validation set can affect measures of model performance and present the uses...

    Authors: Romin Pajouheshnia, Linda M. Peelen, Karel G. M. Moons, Johannes B. Reitsma and Rolf H. H. Groenwold

    Citation: BMC Medical Research Methodology 2017 17:103

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  46. Content type: Research article

    African Americans have been historically under-represented in genetic studies. More research is needed on effective recruitment strategies for this population, especially on approaches that supplement traditio...

    Authors: Rebecca Salowe, Laura O’Keefe, Sayaka Merriam, Roy Lee, Naira Khachatryan, Prithvi Sankar, Eydie Miller-Ellis, Amanda Lehman, Victoria Addis, Windell Murphy, Jeffrey Henderer, Maureen Maguire and Joan O’Brien

    Citation: BMC Medical Research Methodology 2017 17:101

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