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  1. 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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  2. 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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  3. 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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  4. 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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  5. 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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  6. 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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  7. 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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  8. 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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  9. 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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  10. 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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  11. 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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  12. 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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  13. 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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  14. 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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  15. 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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  16. 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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  17. 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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  18. 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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  19. 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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  20. 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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  21. 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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  22. 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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  23. 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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  24. Content type: Research article

    Inter-rater reliability (IRR) is mainly assessed based on only two reviewers of unknown expertise. The aim of this paper is to examine differences in the IRR of the Assessment of Multiple Systematic Reviews (AMST...

    Authors: Dawid Pieper, Anja Jacobs, Beate Weikert, Alba Fishta and Uta Wegewitz

    Citation: BMC Medical Research Methodology 2017 17:98

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  25. Content type: Research article

    Complex interventions such as self-management courses are difficult to evaluate due to the many interacting components. The way complex interventions are delivered can influence the effect they have for patien...

    Authors: G. Wojewodka, S. Hurley, S. J. C. Taylor, A. J. Noble, L. Ridsdale and L. H. Goldstein

    Citation: BMC Medical Research Methodology 2017 17:100

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  26. Content type: Research article

    Data cleaning is an important quality assurance in data linkage research studies. This paper presents the data cleaning and preparation process for a large-scale cross-jurisdictional Australian study (the Smok...

    Authors: Duong Thuy Tran, Alys Havard and Louisa R. Jorm

    Citation: BMC Medical Research Methodology 2017 17:97

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  27. Content type: Research article

    Probabilistic record linkage is a process used to bring together person-based records from within the same dataset (de-duplication) or from disparate datasets using pairwise comparisons and matching probabilit...

    Authors: Adrian P. Brown, Sean M. Randall, Anna M. Ferrante, James B. Semmens and James H. Boyd

    Citation: BMC Medical Research Methodology 2017 17:95

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  28. Content type: Research article

    Selection bias and non-participation bias are major methodological concerns which impact external validity. Cluster-randomized controlled trials are especially prone to selection bias as it is impractical to b...

    Authors: Rochelle Yang, Barry L. Carter, Tyler H. Gums, Brian M. Gryzlak, Yinghui Xu and Barcey T. Levy

    Citation: BMC Medical Research Methodology 2017 17:94

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  29. Content type: Research article

    As publishing is essential but competitive for researchers, difficulties in writing and submitting medical articles to biomedical journals are disabling. The DIAzePAM (Difficultés des Auteurs à la Publication d’A...

    Authors: Martin Duracinsky, Christophe Lalanne, Laurence Rous, Aichata Fofana Dara, Lesya Baudoin, Claire Pellet, Alexandre Descamps, Fabienne Péretz and Olivier Chassany

    Citation: BMC Medical Research Methodology 2017 17:96

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  30. Content type: Research article

    To illustrate the 10-year risks of urinary adverse events (UAEs) among men diagnosed with prostate cancer and treated with different types of therapy, accounting for the competing risk of death.

    Authors: Charlotte A. Bolch, Haitao Chu, Stephanie Jarosek, Stephen R. Cole, Sean Elliott and Beth Virnig

    Citation: BMC Medical Research Methodology 2017 17:93

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  31. Content type: Research Article

    Composite endpoints comprising hospital admissions and death are the primary outcome in many cardiovascular clinical trials. For statistical analysis, a Cox proportional hazards model for the time to first eve...

    Authors: Antje Jahn-Eimermacher, Katharina Ingel, Stella Preussler, Antoni Bayes-Genis and Harald Binder

    Citation: BMC Medical Research Methodology 2017 17:92

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  32. Content type: Research Article

    There are a growing number of observational studies that do not only focus on single biomarkers for predicting an outcome event, but address questions in a multivariable setting. For example, when quantifying ...

    Authors: Andreas Schulz, Daniela Zöller, Stefan Nickels, Manfred E. Beutel, Maria Blettner, Philipp S. Wild and Harald Binder

    Citation: BMC Medical Research Methodology 2017 17:90

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  33. Content type: Research article

    Administrative data is a useful tool for research and quality improvement; however, validity of research findings based on these data depends on their reliability. Diagnoses assigned by physicians are subseque...

    Authors: Kristin Burles, Grant Innes, Kevin Senior, Eddy Lang and Andrew McRae

    Citation: BMC Medical Research Methodology 2017 17:89

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  34. Content type: Research article

    Bayesian hierarchical piecewise regression (BHPR) modeling has not been previously formulated to detect and characterise the mechanism of trajectory divergence between groups of participants that have longitud...

    Authors: Marie-jeanne Buscot, Simon S. Wotherspoon, Costan G. Magnussen, Markus Juonala, Matthew A. Sabin, David P. Burgner, Terho Lehtimäki, Jorma S. A. Viikari, Nina Hutri-Kähönen, Olli T. Raitakari and Russell J. Thomson

    Citation: BMC Medical Research Methodology 2017 17:86

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  35. Content type: Research article

    The nested case-control study (NCC) design within a prospective cohort study is used when outcome data are available for all subjects, but the exposure of interest has not been collected, and is difficult or p...

    Authors: Long H. Ngo, Sharon K. Inouye, Richard N. Jones, Thomas G. Travison, Towia A. Libermann, Simon T. Dillon, George A. Kuchel, Sarinnapha M. Vasunilashorn, David C. Alsop and Edward R. Marcantonio

    Citation: BMC Medical Research Methodology 2017 17:88

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  36. Content type: Research article

    Many medicines are dosed to achieve a particular therapeutic range, and monitored using therapeutic drug monitoring (TDM). The evidence base for a therapeutic range can be evaluated using systematic reviews, t...

    Authors: Lewis Cooney, Yoon K. Loke, Su Golder, Jamie Kirkham, Andrea Jorgensen, Ian Sinha and Daniel Hawcutt

    Citation: BMC Medical Research Methodology 2017 17:84

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  37. Content type: Research article

    Self-reported weight and height are commonly used in lieu of direct measurements of weight and height in large epidemiological surveys due to inevitable constraints such as budget and human resource. However, ...

    Authors: C. C. Kee, K. H. Lim, M. G. Sumarni, C. H. Teh, Y. Y. Chan, M. I. Nuur Hafizah, Y. K. Cheah, E. O. Tee, Y. Ahmad Faudzi and M. Amal Nasir

    Citation: BMC Medical Research Methodology 2017 17:85

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  38. Content type: Research article

    Thanks to the advances in genomics and targeted treatments, more and more prediction models based on biomarkers are being developed to predict potential benefit from treatments in a randomized clinical trial. ...

    Authors: Nils Ternès, Federico Rotolo and Stefan Michiels

    Citation: BMC Medical Research Methodology 2017 17:83

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  39. Content type: Research article

    The relative scale has been used for decades in analysing binary data in epidemiology. In contrast, there has been a long tradition of carrying out meta-analyses of continuous outcomes on the absolute, origina...

    Authors: Harri Hemilä

    Citation: BMC Medical Research Methodology 2017 17:82

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  40. Content type: Research article

    One potential concern with using mailed surveys containing trauma-related content is the possibility of re-traumatizing survivors without a trained mental health professional present. Prior research provides i...

    Authors: Maureen Murdoch, Shannon Marie Kehle-Forbes and Melissa Ruth Partin

    Citation: BMC Medical Research Methodology 2017 17:81

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  41. Content type: Research Article

    Relative survival analysis is a subfield of survival analysis where competing risks data are observed, but the causes of death are unknown. A first step in the analysis of such data is usually the estimation o...

    Authors: Klemen Pavlič and Maja Pohar Perme

    Citation: BMC Medical Research Methodology 2017 17:79

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  42. Content type: Research article

    Double-adjustment can be used to remove confounding if imbalance exists after propensity score (PS) matching. However, it is not always possible to include all covariates in adjustment. We aimed to find the op...

    Authors: Tri-Long Nguyen, Gary S. Collins, Jessica Spence, Jean-Pierre Daurès, P. J. Devereaux, Paul Landais and Yannick Le Manach

    Citation: BMC Medical Research Methodology 2017 17:78

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  43. Content type: Research article

    We describe a novel strategy for power and sample size determination developed for studies utilizing investigational technologies with limited available preliminary data, specifically of imaging biomarkers. We...

    Authors: Christine E. McLaren, Wen-Pin Chen, Thomas D. O’Sullivan, Daniel L. Gillen, Min-Ying Su, Jeon H. Chen and Bruce J. Tromberg

    Citation: BMC Medical Research Methodology 2017 17:75

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