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  1. Research article

    Evaluation of a modified version of the Posttraumatic Growth Inventory-Short Form

    Posttraumatic growth is the positive change resulting from traumatic experiences and is typically assessed with retrospective measures like the Posttraumatic Growth Inventory (PTGI). The PTGI was designed to i...

    Navjot Kaur, Ben Porter, Cynthia A. LeardMann, Laura E. Tobin, Hector Lemus and David D. Luxton

    BMC Medical Research Methodology 2017 17:69

    Published on: 20 April 2017

  2. Research article

    The impact of the mode of survey administration on estimates of daily smoking for mobile phone only users

    Over the past decade, there have been substantial changes in landline and mobile phone ownership, with a substantial increase in the proportion of mobile-only households. Estimates of daily smoking rates for t...

    Joseph Hanna, Damien V. Cordery, David G. Steel, Walter Davis and Timothy C. Harrold

    BMC Medical Research Methodology 2017 17:65

    Published on: 20 April 2017

  3. Study protocol

    Protocol for the development of a salutogenic intrapartum core outcome set (SIPCOS)

    Maternity intrapartum care research and clinical care more often focus on outcomes that minimise or prevent adverse health rather than on what constitutes positive health and wellbeing (salutogenesis). This wa...

    Valerie Smith, Deirdre Daly, Ingela Lundgren, Tine Eri, Cecily Begley, Mechthild M. Gross, Soo Downe, Zarko Alfirevic and Declan Devane

    BMC Medical Research Methodology 2017 17:61

    Published on: 19 April 2017

  4. Research article

    Kappa statistic to measure agreement beyond chance in free-response assessments

    The usual kappa statistic requires that all observations be enumerated. However, in free-response assessments, only positive (or abnormal) findings are notified, but negative (or normal) findings are not. This...

    Marc Carpentier, Christophe Combescure, Laura Merlini and Thomas V. Perneger

    BMC Medical Research Methodology 2017 17:62

    Published on: 19 April 2017

  5. Research article

    Grey literature in systematic reviews: a cross-sectional study of the contribution of non-English reports, unpublished studies and dissertations to the results of meta-analyses in child-relevant reviews

    Systematic reviews (SRs) are an important source of information about healthcare interventions. A key component of a well-conducted SR is a comprehensive literature search. There is limited evidence on the con...

    Lisa Hartling, Robin Featherstone, Megan Nuspl, Kassi Shave, Donna M. Dryden and Ben Vandermeer

    BMC Medical Research Methodology 2017 17:64

    Published on: 19 April 2017

  6. Research article

    Review and evaluation of performance measures for survival prediction models in external validation settings

    When developing a prediction model for survival data it is essential to validate its performance in external validation settings using appropriate performance measures. Although a number of such measures have ...

    M. Shafiqur Rahman, Gareth Ambler, Babak Choodari-Oskooei and Rumana Z. Omar

    BMC Medical Research Methodology 2017 17:60

    Published on: 18 April 2017

  7. Research article

    Clinical patient registry recruitment and retention: a survey of patients in two chronic disease registries

    The collection of routine clinical data in the setting of research registries can serve an important role in understanding real world care. However, relatively little is known about the patient experience in r...

    Daniel H. Solomon, Nancy A. Shadick, Michael E. Weinblatt, Michelle Frits, Christine Iannaccone, Agnes Zak and Joshua R. Korzenik

    BMC Medical Research Methodology 2017 17:59

    Published on: 17 April 2017

  8. Research article

    Evidence synthesis to inform model-based cost-effectiveness evaluations of diagnostic tests: a methodological review of health technology assessments

    Evaluations of diagnostic tests are challenging because of the indirect nature of their impact on patient outcomes. Model-based health economic evaluations of tests allow different types of evidence from vario...

    Bethany Shinkins, Yaling Yang, Lucy Abel and Thomas R. Fanshawe

    BMC Medical Research Methodology 2017 17:56

    Published on: 14 April 2017

  9. Research article

    Practical application of opt-out recruitment methods in two health services research studies

    Participant recruitment is an ongoing challenge in health research. Recruitment may be especially difficult for studies of access to health care because, even among those who are in care, people using services...

    Christopher J. Miller, James F. Burgess, Ellen P. Fischer, Deborah J. Hodges, Lindsay K. Belanger, Jessica M. Lipschitz, Siena R. Easley, Christopher J. Koenig, Regina L. Stanley and Jeffrey M. Pyne

    BMC Medical Research Methodology 2017 17:57

    Published on: 14 April 2017

  10. Research Article

    Comparison of surveillance-based metrics for the assessment and monitoring of disease detection: simulation study about type 2 diabetes

    Screening and detection of cases are a common public health priority for treatable chronic conditions with long subclinical periods. However, the validity of commonly-used metrics from surveillance systems for...

    Ralph Brinks, Annika Hoyer, Deborah B. Rolka, Oliver Kuss and Edward W. Gregg

    BMC Medical Research Methodology 2017 17:54

    Published on: 11 April 2017

  11. Correspondence

    Practical partnered research to improve weight loss among overweight/obese veterans: lessons from the trenches

    Obesity and obesity-related conditions, such as type 2 diabetes, are a major issue for Veteran health. Veterans Health Administration (VA) researchers and health systems leaders have worked separately and toge...

    Mona AuYoung, Laura J. Damschroder, Linda Kinsinger, Tannaz Moin and Caroline R. Richardson

    BMC Medical Research Methodology 2017 17:50

    Published on: 29 March 2017

  12. Research article

    The effect of postal questionnaire burden on response rate and answer patterns following admission to intensive care: a randomised controlled trial

    The effects of postal questionnaire burden on return rates and answers given are unclear following treatment on an intensive care unit (ICU). We aimed to establish the effects of different postal questionnaire...

    Robert Hatch, Duncan Young, Vicki Barber, David A Harrison and Peter Watkinson

    BMC Medical Research Methodology 2017 17:49

    Published on: 27 March 2017

  13. Research article

    Evaluation of AMSTAR to assess the methodological quality of systematic reviews in overviews of reviews of healthcare interventions

    Overviews of reviews (overviews) compile information from multiple systematic reviews (SRs) to provide a single synthesis of relevant evidence for decision-making. It is recommended that authors assess and rep...

    Michelle Pollock, Ricardo M. Fernandes and Lisa Hartling

    BMC Medical Research Methodology 2017 17:48

    Published on: 23 March 2017

  14. Research article

    Incorporating nonlinearity into mediation analyses

    Mediation is an important issue considered in the behavioral, medical, and social sciences. It addresses situations where the effect of a predictor variable X on an outcome variable Y is explained to some extent ...

    George J. Knafl, Kathleen A. Knafl, Margaret Grey, Jane Dixon, Janet A. Deatrick and Agatha M. Gallo

    BMC Medical Research Methodology 2017 17:45

    Published on: 21 March 2017

  15. Research article

    Methods for conceptualising ‘visual ability’ as a measurable construct in children with cerebral palsy

    Vision influences functioning and disability of children with cerebral palsy, so there is a growing need for psychometrically robust tools to advance assessment of children’s vision abilities in clinical pract...

    Belinda Deramore Denver, Margareta Adolfsson, Elspeth Froude, Peter Rosenbaum and Christine Imms

    BMC Medical Research Methodology 2017 17:46

    Published on: 21 March 2017

  16. Correspondence

    Implementation of clinical research trials using web-based and mobile devices: challenges and solutions

    With the increasing implementation of web-based, mobile health interventions in clinical trials, it is crucial for researchers to address the security and privacy concerns of patient information according to h...

    Roy Eagleson, Luis Altamirano-Diaz, Alex McInnis, Eva Welisch, Stefanie De Jesus, Harry Prapavessis, Meghan Rombeek, Jamie A. Seabrook, Teresa Park and Kambiz Norozi

    BMC Medical Research Methodology 2017 17:43

    Published on: 17 March 2017

  17. Research article

    Standardizing effect size from linear regression models with log-transformed variables for meta-analysis

    Meta-analysis is very useful to summarize the effect of a treatment or a risk factor for a given disease. Often studies report results based on log-transformed variables in order to achieve the principal assum...

    Miguel Rodríguez-Barranco, Aurelio Tobías, Daniel Redondo, Elena Molina-Portillo and María José Sánchez

    BMC Medical Research Methodology 2017 17:44

    Published on: 17 March 2017

    The Erratum to this article has been published in BMC Medical Research Methodology 2017 17:91

  18. Research article

    The feasibility of matching on a propensity score for acupuncture in a prospective cohort study of patients with chronic pain

    Propensity scores are typically applied in retrospective cohort studies. We describe the feasibility of matching on a propensity score derived from a retrospective cohort and subsequently applied in a prospect...

    Eric S. Johnson, John F. Dickerson, William M. Vollmer, Alee M. Rowley, Cheryl Ritenbaugh, Richard A. Deyo and Lynn DeBar

    BMC Medical Research Methodology 2017 17:42

    Published on: 16 March 2017

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