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BMC Medical Research Methodology

Ausgabe 1/2006

Inhalt (58 Artikel)

Open Access Research article

Sequential boundaries approach in clinical trials with unequal allocation ratios

Peyman Jafari, Seyyed Mohammad Taghi Ayatollahi, Javad Behboodian

Open Access Study protocol

Protocol of the COSMIN study: COnsensus-based Standards for the selection of health Measurement INstruments

LB Mokkink, CB Terwee, DL Knol, PW Stratford, J Alonso, DL Patrick, LM Bouter, HCW de Vet

Open Access Research article

Room for improvement? A survey of the methods used in systematic reviews of adverse effects

Su Golder, Yoon Loke, Heather M McIntosh

Open Access Research article

Maximising response to postal questionnaires – A systematic review of randomised trials in health research

Rachel A Nakash, Jane L Hutton, Ellen C Jørstad-Stein, Simon Gates, Sarah E Lamb

Open Access Research article

Can electronic search engines optimize screening of search results in systematic reviews: an empirical study

Margaret Sampson, Nicholas J Barrowman, David Moher, Tammy J Clifford, Robert W Platt, Andra Morrison, Terry P Klassen, Li Zhang

Open Access Research article

CUSUM: A tool for early feedback about performance?

Winston R Chang, Ian P McLean

Open Access Research article

Evaluation of QUADAS, a tool for the quality assessment of diagnostic accuracy studies

Penny F Whiting, Marie E Weswood, Anne WS Rutjes, Johannes B Reitsma, Patrick NM Bossuyt, Jos Kleijnen

Open Access Research article

An investigation of minimisation criteria

Angie Wade, Huiqi Pan, Simon Eaton, Agostino Pierro, Evelyn Ong

Open Access Research article

Reproducibility of the STARD checklist: an instrument to assess the quality of reporting of diagnostic accuracy studies

Nynke Smidt, Anne WS Rutjes, Daniëlle AWM van der Windt, Raymond WJG Ostelo, Patrick M Bossuyt, Johannes B Reitsma, Lex M Bouter, Henrica CW de Vet

Open Access Research article

Reviewer agreement trends from four years of electronic submissions of conference abstract

Brian H Rowe, Trevor L Strome, Carol Spooner, Sandra Blitz, Eric Grafstein, Andrew Worster

Open Access Research article

How good is probabilistic record linkage to reconstruct reproductive histories? Results from the Aberdeen children of the 1950s study

Dorothea Nitsch, Susan Morton, Bianca L DeStavola, Heather Clark, David A Leon

Open Access Technical advance

Using intervention time series analyses to assess the effects of imperfectly identifiable natural events: a general method and example

Stuart Gilmour, Louisa Degenhardt, Wayne Hall, Carolyn Day

Open Access Research article

Planning a cluster randomized trial with unequal cluster sizes: practical issues involving continuous outcomes

Lydia Guittet, Philippe Ravaud, Bruno Giraudeau

Open Access Research article

Multivariable risk prediction can greatly enhance the statistical power of clinical trial subgroup analysis

Rodney A Hayward, David M Kent, Sandeep Vijan, Timothy P Hofer

Open Access Research article

Scratch lottery tickets are a poor incentive to respond to mailed questionnaires

Vilhjalmur Finsen, Andreas H Storeheier

Open Access Research article

The impact of imprecisely measured covariates on estimating gene-environment interactions

Darren C Greenwood, Mark S Gilthorpe, Janet E Cade

Open Access Research article

Identifying systematic reviews of the adverse effects of health care interventions

Su Golder, Heather M McIntosh, Yoon Loke

Open Access Research article

Optimizing search strategies to identify randomized controlled trials in MEDLINE

Li Zhang, Isola Ajiferuke, Margaret Sampson

Open Access Research article

The fading of reported effectiveness. A meta-analysis of randomised controlled trials

Bernhard T Gehr, Christel Weiss, Franz Porzsolt

Open Access Research article

Motor function in Parkinson's disease and supranuclear palsy: simultaneous factor analysis of a clinical scale in several populations

Pieter M Kroonenberg, Frans J Oort, Glenn T Stebbins, Sue E Leurgans, Esther Cubo, Christopher G Goetz

Open Access Research article

Does updating improve the methodological and reporting quality of systematic reviews?

Beverley Shea, Maarten Boers, Jeremy M Grimshaw, Candyce Hamel, Lex M Bouter

Open Access Debate

Circular instead of hierarchical: methodological principles for the evaluation of complex interventions

Harald Walach, Torkel Falkenberg, Vinjar Fønnebø, George Lewith, Wayne B Jonas

Open Access Software

Meta-DiSc: a software for meta-analysis of test accuracy data

Javier Zamora, Victor Abraira, Alfonso Muriel, Khalid Khan, Arri Coomarasamy

Open Access Research article

Calculating confidence intervals for impact numbers

Mandy Hildebrandt, Ralf Bender, Ulrich Gehrmann, Maria Blettner

Open Access Research article

An alternative to the hand searching gold standard: validating methodological search filters using relative recall

Margaret Sampson, Li Zhang, Andra Morrison, Nicholas J Barrowman, Tammy J Clifford, Robert W Platt, Terry P Klassen, David Moher

Open Access Research article

Increasing recruitment to randomised trials: a review of randomised controlled trials

Judith M Watson, David J Torgerson

Open Access Technical advance

Conducting a critical interpretive synthesis of the literature on access to healthcare by vulnerable groups

Mary Dixon-Woods, Debbie Cavers, Shona Agarwal, Ellen Annandale, Antony Arthur, Janet Harvey, Ron Hsu, Savita Katbamna, Richard Olsen, Lucy Smith, Richard Riley, Alex J Sutton

Open Access Research article

Identification of candidate categories of the International Classification of Functioning Disability and Health (ICF) for a Generic ICF Core Setbased on regression modelling

Alarcos Cieza, Szilvia Geyh, Somnath Chatterji, Nenad Kostanjsek, Bedirhan T Üstün, Gerold Stucki

Open Access Correspondence

Country development and manuscript selection bias: a review of published studies

Reza Yousefi-Nooraie, Behnam Shakiba, Soroush Mortaz-Hejri

Open Access Research article

Estimation of dynamical model parameters taking into account undetectable marker values

Rodolphe Thiébaut, Jérémie Guedj, Hélène Jacqmin-Gadda, Geneviève Chêne, Pascale Trimoulet, Didier Neau, Daniel Commenges

Open Access Study protocol

UVB phototherapy in an outpatient setting or at home: a pragmatic randomised single-blind trial designed to settle the discussion. The PLUTO study

Mayke BG Koek, Erik Buskens, Paul HA Steegmans, Huib van Weelden, Carla AFM Bruijnzeel-Koomen, Vigfús Sigurdsson

Open Access Research article

Fungal infection-related mortality versus total mortality as an outcome in trials of antifungal agents

Anne K Due, Helle K Johansen, Peter C Gøtzsche

Open Access Research article

Identifying observational studies of surgical interventions in MEDLINE and EMBASE

Cynthia Fraser, Alison Murray, Jennifer Burr

Open Access Commentary

The relationship between quality of research and citation frequency

Pentti Nieminen, James Carpenter, Gerta Rucker, Martin Schumacher

Open Access Research article

Patient acceptability of larval therapy for leg ulcer treatment: a randomised survey to inform the sample size calculation of a randomised trial

ES Petherick, S O'Meara, K Spilsbury, CP Iglesias, EA Nelson, DJ Torgerson

Open Access Correspondence

Does a "Level I Evidence" rating imply high quality of reporting in orthopaedic randomised controlled trials?

Rudolf W Poolman, Peter AA Struijs, Rover Krips, Inger N Sierevelt, Kristina H Lutz, Mohit Bhandari

Open Access Correspondence

Error in statistical tests of error in statistical tests

Monwhea Jeng

Open Access Research article

Methodological standards in non-inferiority AIDS trials: moving from adherence to compliance

Jean-Jacques Parienti, Renaud Verdon, Véronique Massari

Open Access Research article

An instrument to measure job satisfaction of nursing home administrators

Nicholas G Castle

Open Access Research article

Joint distribution approaches to simultaneously quantifying benefit and risk

Michele L Shaffer, Kristi L Watterberg

Open Access Research article

Structural equation and log-linear modeling: a comparison of methods in the analysis of a study on caregivers' health

Bin Zhu, Stephen D Walter, Peter L Rosenbaum, Dianne J Russell, Parminder Raina

Open Access Software

Development and validation of MIX: comprehensive free software for meta-analysis of causal research data

Leon Bax, Ly-Mee Yu, Noriaki Ikeda, Harukazu Tsuruta, Karel GM Moons

Open Access Debate

A system for rating the stability and strength of medical evidence

Jonathan R Treadwell, Stephen J Tregear, James T Reston, Charles M Turkelson

Open Access Research article

Performance of statistical models to predict mental health and substance abuse cost

Maria Montez-Rath, Cindy L Christiansen, Susan L Ettner, Susan Loveland, Amy K Rosen

Open Access Research article

The stepped wedge trial design: a systematic review

Celia A Brown, Richard J Lilford

Open Access Research article

Economics methods in Cochrane systematic reviews of health promotion and public health related interventions

Ian Shemilt, Miranda Mugford, Michael Drummond, Eric Eisenstein, Jacqueline Mallender, David McDaid, Luke Vale, Damian Walker

Open Access Correspondence

Checklist for the qualitative evaluation of clinical studies with particular focus on external validity and model validity

Gudrun Bornhöft, Stefanie Maxion-Bergemann, Ursula Wolf, Gunver S Kienle, Andreas Michalsen, Horst C Vollmar, Simon Gilbertson, Peter F Matthiessen

Open Access Research article

Dealing with missing data in a multi-question depression scale: a comparison of imputation methods

Fiona M Shrive, Heather Stuart, Hude Quan, William A Ghali

Open Access Research article

Dropout in a longitudinal, cohort study of urologic disease in community men

Naomi M Gades, Debra J Jacobson, Michaela E McGree, Michael M Lieber, Rosebud O Roberts, Cynthia J Girman, Steven J Jacobsen