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Zeitschrift

BMC Medical Research Methodology

BMC Medical Research Methodology 1/2014

Ausgabe 1/2014

Inhaltsverzeichnis ( 140 Artikel )

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Developing and validating risk prediction models in an individual participant data meta-analysis

Ikhlaaq Ahmed, Thomas PA Debray, Karel GM Moons, Richard D Riley

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Assessing discriminative ability of risk models in clustered data

David van Klaveren, Ewout W Steyerberg, Pablo Perel, Yvonne Vergouwe

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Effect of numbering of return envelopes on participation, explicit refusals, and bias: experiment and meta-analysis

Thomas V Perneger, Stéphane Cullati, Sandrine Rudaz, Thomas Agoritsas, Ralph E Schmidt, Christophe Combescure, Delphine S Courvoisier

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A critical analysis of test-retest reliability in instrument validation studies of cancer patients under palliative care: a systematic review

Carlos Eduardo Paiva, Eliane Marçon Barroso, Estela Cristina Carneseca, Cristiano de Pádua Souza, Felipe Thomé dos Santos, Rossana Verónica Mendoza López, Sakamoto Bianca Ribeiro Paiva

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Factors influencing recruitment to research: qualitative study of the experiences and perceptions of research teams

Lisa Newington, Alison Metcalfe

01.12.2014 | Debate | Ausgabe 1/2014 Open Access

Choosing sensitivity analyses for randomised trials: principles

Tim P Morris, Brennan C Kahan, Ian R White

01.12.2014 | Reviewer acknowledgement | Ausgabe 1/2014 Open Access

Reviewer acknowledgement 2013

Irene Pala

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Use of the i2b2 research query tool to conduct a matched case–control clinical research study: advantages, disadvantages and methodological considerations

Emilie K Johnson, Sarabeth Broder-Fingert, Pornthep Tanpowpong, Jonathan Bickel, Jenifer R Lightdale, Caleb P Nelson

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Comparison of two data collection processes in clinical studies: electronic and paper case report forms

Anaïs Le Jeannic, Céline Quelen, Corinne Alberti, Isabelle Durand-Zaleski

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Reasons for participation and non-participation in a diabetes prevention trial among women with prior gestational diabetes mellitus (GDM)

Jennifer J Infanti, Angela O’Dea, Irene Gibson, Brian E McGuire, John Newell, Liam G Glynn, Ciaran O’Neill, Susan B Connolly, Fidelma P Dunne

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Mediation analysis of the relationship between institutional research activity and patient survival

Justine Rochon, Andreas du Bois, Theis Lange

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Survey mode and asking about future intentions did not impact self-reported colorectal cancer screening accuracy

Timothy J Beebe, Jeanette Y Ziegenfuss, Sarah M Jenkins, Kandace A Lackore, Timothy P Johnson

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

An overview of the statistical methods reported by studies using the Canadian community health survey

Dean W Yergens, Daniel J Dutton, Scott B Patten

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Using vignettes in qualitative research to explore barriers and facilitating factors to the uptake of prevention of mother-to-child transmission services in rural Tanzania: a critical analysis

Annabelle Gourlay, Gerry Mshana, Isolde Birdthistle, Grace Bulugu, Basia Zaba, Mark Urassa

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Estimating time-to-onset of adverse drug reactions from spontaneous reporting databases

Fanny Leroy, Jean-Yves Dauxois, Hélène Théophile, Françoise Haramburu, Pascale Tubert-Bitter

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Accounting for centre-effects in multicentre trials with a binary outcome – when, why, and how?

Brennan C Kahan

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Detecting and correcting the bias of unmeasured factors using perturbation analysis: a data-mining approach

Wen-Chung Lee

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Using mixed methods to select optimal mode of administration for a patient-reported outcome instrument for people with pressure ulcers

Claudia Rutherford, Jane Nixon, Julia M Brown, Donna L Lamping, Stefan J Cano

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Influences on recruitment to randomised controlled trials in mental health settings in England: a national cross-sectional survey of researchers working for the Mental Health Research Network

Rohan Borschmann, Sue Patterson, Dilkushi Poovendran, Danielle Wilson, Tim Weaver

01.12.2014 | Debate | Ausgabe 1/2014 Open Access

Use of country of birth as an indicator of refugee background in health datasets

Melanie Gibson-Helm, Jacqueline Boyle, Andrew Block, Helena Teede

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Describing qualitative research undertaken with randomised controlled trials in grant proposals: a documentary analysis

Sarah J Drabble, Alicia O’Cathain, Kate J Thomas, Anne Rudolph, Jenny Hewison

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Joint modelling rationale for chained equations

Rachael A Hughes, Ian R White, Shaun R Seaman, James R Carpenter, Kate Tilling, Jonathan AC Sterne

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Which is more generalizable, powerful and interpretable in meta-analyses, mean difference or standardized mean difference?

Nozomi Takeshima, Takashi Sozu, Aran Tajika, Yusuke Ogawa, Yu Hayasaka, Toshiaki A Furukawa

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A modified Wald interval for the area under the ROC curve (AUC) in diagnostic case-control studies

Martina Kottas, Oliver Kuss, Antonia Zapf

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Visualising and modelling changes in categorical variables in longitudinal studies

Mark Jones, Richard Hockey, Gita D Mishra, Annette Dobson

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Challenges and strategies for cohort retention and data collection in an indigenous population: Australian Aboriginal Birth Cohort

Megan Lawrance, Susan M Sayers, Gurmeet R Singh

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Incorporating quality assessments of primary studies in the conclusions of diagnostic accuracy reviews: a cross-sectional study

Eleanor A Ochodo, Wynanda A van Enst, Christiana A Naaktgeboren, Joris AH de Groot, Lotty Hooft, Karel GM Moons, Johannes B Reitsma, Patrick M Bossuyt, Mariska MG Leeflang

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Easier said than done!: methodological challenges with conducting maternal death review research in Malawi

Viva Combs Thorsen, Johanne Sundby, Tarek Meguid, Address Malata

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Calculate excess mortality during heatwaves using Hilbert-Huang transform algorithm

Gang Xie, Yuming Guo, Shilu Tong, Lin Ma

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Reducing decision errors in the paired comparison of the diagnostic accuracy of screening tests with Gaussian outcomes

Brandy M Ringham, Todd A Alonzo, John T Brinton, Sarah M Kreidler, Aarti Munjal, Keith E Muller, Deborah H Glueck

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Reaching the hard-to-reach: a systematic review of strategies for improving health and medical research with socially disadvantaged groups

Billie Bonevski, Madeleine Randell, Chris Paul, Kathy Chapman, Laura Twyman, Jamie Bryant, Irena Brozek, Clare Hughes

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Gathering opinion leader data for a tailored implementation intervention in secondary healthcare: a randomised trial

Katherine Farley, Andria Hanbury, Carl Thompson

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A randomized controlled trial of the effectiveness of a pre-recruitment primer letter to increase participation in a study of colorectal screening and surveillance

Christine Paul, Ryan Courtney, Rob Sanson-Fisher, Mariko Carey, David Hill, Jody Simmons, Shiho Rose

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Newcastle-Ottawa Scale: comparing reviewers’ to authors’ assessments

Carson Ka-Lok Lo, Dominik Mertz, Mark Loeb

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Recruiting and motivating black subjects to complete a lengthy survey in a large cohort study: an exploration of different strategies

Patti Herring, Terry Butler, Sonja Hall, Hannelore Bennett, Susanne B Montgomery, Gary Fraser

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Challenges to be overcome using population-based sampling methods to recruit veterans for a study of post-traumatic stress disorder and traumatic brain injury

Peter J Bayley, Jennifer Y Kong, Drew A Helmer, Aaron Schneiderman, Lauren A Roselli, Stephanie M Rosse, Jordan A Jackson, Janet Baldwin, Linda Isaac, Michael Nolasco, Marc R Blackman, Matthew J Reinhard, John Wesson Ashford, Julie C Chapman, The MIND Study Group

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Bias, precision and statistical power of analysis of covariance in the analysis of randomized trials with baseline imbalance: a simulation study

Bolaji E Egbewale, Martyn Lewis, Julius Sim

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Concordance between medical records and interview data in correctional facilities

Jennifer R Bai, Dhritiman V Mukherjee, Montina Befus, Zoltan Apa, Franklin D Lowy, Elaine L Larson

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

SYRCLE’s risk of bias tool for animal studies

Carlijn R Hooijmans, Maroeska M Rovers, Rob BM de Vries, Marlies Leenaars, Merel Ritskes-Hoitinga, Miranda W Langendam

01.12.2014 | Technical advance | Ausgabe 1/2014 Open Access

Collection of patient-reported outcomes; - text messages on mobile phones provide valid scores and high response rates

Anne Christie, Hanne Dagfinrud, Øystein Dale, Trenton Schulz, Kåre Birger Hagen

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

External validation of multivariable prediction models: a systematic review of methodological conduct and reporting

Gary S Collins, Joris A de Groot, Susan Dutton, Omar Omar, Milensu Shanyinde, Abdelouahid Tajar, Merryn Voysey, Rose Wharton, Ly-Mee Yu, Karel G Moons, Douglas G Altman

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

The statistical interpretation of pilot trials: should significance thresholds be reconsidered?

Ellen C Lee, Amy L Whitehead, Richard M Jacques, Steven A Julious

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Enabling research in care homes: an evaluation of a national network of research ready care homes

Sue L Davies, Claire Goodman, Jill Manthorpe, Adam Smith, Natasha Carrick, Steve Iliffe

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Intracluster correlation coefficients for the Brazilian Multicenter Study on Preterm Birth (EMIP): methodological and practical implications

Giuliane J Lajos, Samira M Haddad, Ricardo P Tedesco, Renato Passini Jr, Tabata Z Dias, Marcelo L Nomura, Patrícia M Rheder, Maria H Sousa, Jose G Cecatti, for the Brazilian Multicenter Study on Preterm Birth study group

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Identifying unusual performance in Australian and New Zealand intensive care units from 2000 to 2010

Patricia J Solomon, Jessica Kasza, John L Moran, the Australian and New Zealand Intensive Care Society (ANZICS) Centre for Outcome and Resource Evaluation (CORE)

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A method for estimating wage, using standardised occupational classifications, for use in medical research in the place of self-reported income

Tom Clemens, Chris Dibben

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Adoption of workplaces and reach of employees for a multi-faceted intervention targeting low back pain among nurses’ aides

Charlotte Diana Nørregaard Rasmussen, Anne Konring Larsen, Andreas Holtermann, Karen Søgaard, Marie Birk Jørgensen

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Attributable risk from distributed lag models

Antonio Gasparrini, Michela Leone

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Meta-analysis and meta-modelling for diagnostic problems

Suphada Charoensawat, Walailuck Böhning, Dankmar Böhning, Heinz Holling

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Comparison of methods for imputing limited-range variables: a simulation study

Laura Rodwell, Katherine J Lee, Helena Romaniuk, John B Carlin

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Estimating the size of hidden populations from register data

Anders Ledberg, Peter Wennberg

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Comparison of intervention effects in split-mouth and parallel-arm randomized controlled trials: a meta-epidemiological study

Violaine Smaïl-Faugeron, Hélène Fron-Chabouis, Frédéric Courson, Pierre Durieux

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Validation of self-reported weights and heights in the avoiding diabetes after pregnancy trial (ADAPT)

Kathryn A Paez, Susan J Griffey, Jennifer Thompson, Matthew W Gillman

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Using logic model methods in systematic review synthesis: describing complex pathways in referral management interventions

Susan K Baxter, Lindsay Blank, Helen Buckley Woods, Nick Payne, Melanie Rimmer, Elizabeth Goyder

01.12.2014 | Technical advance | Ausgabe 1/2014 Open Access

Efficient clinical evaluation of guideline quality: development and testing of a new tool

Karen Grimmer, Janine Margarita Dizon, Steve Milanese, Ellena King, Kate Beaton, Olivia Thorpe, Lucylynn Lizarondo, Julie Luker, Zuzana Machotka, Saravana Kumar

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

The performance of sequence symmetry analysis as a tool for post-market surveillance of newly marketed medicines: a simulation study

Nicole L Pratt, Jenni Ilomäki, Chris Raymond, Elizabeth E Roughead

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Investigation of publication bias in meta-analyses of diagnostic test accuracy: a meta-epidemiological study

W Annefloor van Enst, Eleanor Ochodo, Rob JPM Scholten, Lotty Hooft, Mariska M Leeflang

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Accounting for individual differences and timing of events: estimating the effect of treatment on criminal convictions in heroin users

Jo Røislien, Thomas Clausen, Jon Michael Gran, Anne Bukten

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

The promise of record linkage for assessing the uptake of health services in resource constrained settings: a pilot study from South Africa

Chodziwadziwa W Kabudula, Benjamin D Clark, Francesc Xavier Gómez-Olivé, Stephen Tollman, Jane Menken, Georges Reniers

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Testing the treatment effect on competing causes of death in oncology clinical trials

Federico Rotolo, Stefan Michiels

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Citation searching: a systematic review case study of multiple risk behaviour interventions

Kath Wright, Su Golder, Rocio Rodriguez-Lopez

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Network-meta analysis made easy: detection of inconsistency using factorial analysis-of-variance models

Hans-Peter Piepho

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Joint spatial modeling to identify shared patterns among chronic related potentially preventable hospitalizations

Berta Ibañez-Beroiz, Julián Librero, Enrique Bernal-Delgado, Sandra García-Armesto, Silvia Villanueva-Ferragud, Salvador Peiró

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Tuning multiple imputation by predictive mean matching and local residual draws

Tim P Morris, Ian R White, Patrick Royston

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

The effectiveness of recruitment strategies on general practitioner’s survey response rates – a systematic review

Sabrina Winona Pit, Tham Vo, Sagun Pyakurel

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Evidence-based decision-making in infectious diseases epidemiology, prevention and control: matching research questions to study designs and quality appraisal tools

Thomas Harder, Anja Takla, Eva Rehfuess, Alex Sánchez-Vivar, Dorothea Matysiak-Klose, Tim Eckmanns, Gérard Krause, Helena de Carvalho Gomes, Andreas Jansen, Simon Ellis, Frode Forland, Roberta James, Joerg J Meerpohl, Antony Morgan, Holger Schünemann, Teun Zuiderent-Jerak, Ole Wichmann

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Procedures for assessing psychological predictors of injuries in circus artists: a pilot prospective study

Ian Shrier, John S Raglin, Emily B Levitan, Murray A Mittleman, Russell J Steele, Janette Powell

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Measuring health-related quality of life in chronic obstructive pulmonary disease: properties of the EQ-5D-5L and PROMIS-43 short form

Fang-Ju Lin, A Simon Pickard, Jerry A Krishnan, Min J Joo, David H Au, Shannon S Carson, Suzanne Gillespie, Ashley G Henderson, Peter K Lindenauer, Mary Ann McBurnie, Richard A Mularski, Edward T Naureckas, William M Vollmer, Todd A Lee

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Systematic review of methods for individual patient data meta- analysis with binary outcomes

Doneal Thomas, Sanyath Radji, Andrea Benedetti

01.12.2014 | Technical advance | Ausgabe 1/2014 Open Access

A Bayesian framework for estimating the incremental value of a diagnostic test in the absence of a gold standard

Daphne I Ling, Madhukar Pai, Ian Schiller, Nandini Dendukuri

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Comparison of robustness to outliers between robust poisson models and log-binomial models when estimating relative risks for common binary outcomes: a simulation study

Wansu Chen, Jiaxiao Shi, Lei Qian, Stanley P Azen

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Adaptive list sequential sampling method for population-based observational studies

Michel H Hof, Anita CJ Ravelli, Aeilko H Zwinderman

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Nurse awareness of clinical research: a survey in a Japanese University Hospital

Hiroaki Yanagawa, Shigemi Takai, Michiko Yoshimaru, Toshiko Miyamoto, Rumi Katashima, Kikue Kida

01.12.2014 | Correspondence | Ausgabe 1/2014 Open Access

Three steps to writing adaptive study protocols in the early phase clinical development of new medicines

Ulrike Lorch, Martin O’Kane, Jorg Taubel

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

An assessment of the relationship between clinical utility and predictive ability measures and the impact of mean risk in the population

Kevin McGeechan, Petra Macaskill, Les Irwig, Patrick MM Bossuyt

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A simple ratio-based approach for power and sample size determination for 2-group comparison using Rasch models

Véronique Sébille, Myriam Blanchin, Francis Guillemin, Bruno Falissard, Jean-Benoit Hardouin

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Latent class bivariate model for the meta-analysis of diagnostic test accuracy studies

Paolo Eusebi, Johannes B Reitsma, Jeroen K Vermunt

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Comparison of two alternative study designs in assessment of medicines utilisation in neonates

Georgi Nellis, Irja Lutsar, Heili Varendi, Karolin Toompere, Mark A Turner, Jennifer Duncan, Tuuli Metsvaht

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Impact of different privacy conditions and incentives on survey response rate, participant representativeness, and disclosure of sensitive information: a randomized controlled trial

Maureen Murdoch, Alisha Baines Simon, Melissa Anderson Polusny, Ann Kay Bangerter, Joseph Patrick Grill, Siamak Noorbaloochi, Melissa Ruth Partin

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Matching methods to create paired survival data based on an exposure occurring over time: a simulation study with application to breast cancer

Alexia Savignoni, Caroline Giard, Pascale Tubert-Bitter, Yann De Rycke

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Selecting long-term care facilities with high use of acute hospitalisations: issues and options

Joanna B Broad, Toni Ashton, Thomas Lumley, Michal Boyd, Ngaire Kerse, Martin J Connolly

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Utilising a collective case study system theory mixed methods approach: a rural health example

Robyn Adams, Anne Jones, Sophie Lefmann, Lorraine Sheppard

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Bayesian designs of phase II oncology trials to select maximum effective dose assuming monotonic dose-response relationship

Beibei Guo, Yisheng Li

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Designing questionnaires: healthcare survey to compare two different response scales

Salome Dell-Kuster, Esteban Sanjuan, Atanas Todorov, Heidemarie Weber, Michael Heberer, Rachel Rosenthal

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Detection of independent associations in a large epidemiologic dataset: a comparison of random forests, boosted regression trees, conventional and penalized logistic regression for identifying independent factors associated with H1N1pdm influenza infections

Yohann Mansiaux, Fabrice Carrat

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Developing and evaluating interventions that are applicable and relevant to inpatients and those who care for them; a multiphase, pragmatic action research approach

Jack J Bell, Tony Rossi, Judith D Bauer, Sandra Capra

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Getting under the skin of the primary care consultation using video stimulated recall: a systematic review

Zoe Paskins, Gretl McHugh, Andrew B Hassell

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Methods for calculating confidence and credible intervals for the residual between-study variance in random effects meta-regression models

Dan Jackson, Rebecca Turner, Kirsty Rhodes, Wolfgang Viechtbauer

01.12.2014 | Technical advance | Ausgabe 1/2014 Open Access

Observer agreement paradoxes in 2x2 tables: comparison of agreement measures

Viswanathan Shankar, Shrikant I Bangdiwala

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

The effect of an internet option and single-sided printing format to increase the response rate to a population-based study: a randomized controlled trial

Elisa Flüß, Christine M Bond, Gareth T Jones, Gary J Macfarlane

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

The influence of ethnic group composition on focus group discussions

Nan Greenwood, Theresa Ellmers, Jess Holley

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Characteristics of a loop of evidence that affect detection and estimation of inconsistency: a simulation study

Areti Angeliki Veroniki, Dimitris Mavridis, Julian PT Higgins, Georgia Salanti

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

You are how you recruit: a cohort and randomized controlled trial of recruitment strategies

Amy Maghera, Paul Kahlke, Amanda Lau, Yiye Zeng, Chris Hoskins, Tom Corbett, Donna Manca, Thierry Lacaze-Masmonteil, Denise Hemmings, Piush Mandhane

01.12.2014 | Technical advance | Ausgabe 1/2014 Open Access

Establishing confidence in the output of qualitative research synthesis: the ConQual approach

Zachary Munn, Kylie Porritt, Craig Lockwood, Edoardo Aromataris, Alan Pearson

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A comparison of three clustering methods for finding subgroups in MRI, SMS or clinical data: SPSS TwoStep Cluster analysis, Latent Gold and SNOB

Peter Kent, Rikke K Jensen, Alice Kongsted

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Improving the error rates of the Begg and Mazumdar test for publication bias in fixed effects meta-analysis

Miriam Gjerdevik, Ivar Heuch

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A two-stage Bayesian method for estimating accuracy and disease prevalence for two dependent dichotomous screening tests when the status of individuals who are negative on both tests is unverified

Jin Liu, Feng Chen, Hao Yu, Ping Zeng, Liya Liu

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A test for reporting bias in trial networks: simulation and case studies

Ludovic Trinquart, John PA Ioannidis, Gilles Chatellier, Philippe Ravaud

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Accuracy of the Berger-Exner test for detecting third-order selection bias in randomised controlled trials: a simulation-based investigation

Steffen Mickenautsch, Bo Fu, Sheila Gudehithlu, Vance W Berger

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Validation of prediction models based on lasso regression with multiply imputed data

Jammbe Z Musoro, Aeilko H Zwinderman, Milo A Puhan, Gerben ter Riet, Ronald B Geskus

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Comparison of two instruments for measurement of quality of life in clinical practice - a qualitative study

Lena Wettergren, Mathilde Hedlund Lindberg, Åsa Kettis, Bengt Glimelius, Lena Ring

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Impact of adding a limitations section to abstracts of systematic reviews on readers’ interpretation: a randomized controlled trial

Amélie Yavchitz, Philippe Ravaud, Sally Hopewell, Gabriel Baron, Isabelle Boutron

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Handling missing data in RCTs; a review of the top medical journals

Melanie L Bell, Mallorie Fiero, Nicholas J Horton, Chiu-Hsieh Hsu

01.12.2014 | Correspondence | Ausgabe 1/2014 Open Access

Thresholds for statistical and clinical significance in systematic reviews with meta-analytic methods

Janus Christian Jakobsen, Jørn Wetterslev, Per Winkel, Theis Lange, Christian Gluud

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Comparison of confidence interval methods for an intra-class correlation coefficient (ICC)

Alexei C Ionan, Mei-Yin C Polley, Lisa M McShane, Kevin K Dobbin

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Methodological and ethical issues in research using social media: a metamethod of Human Papillomavirus vaccine studies

Diana L Gustafson, Claire F Woodworth

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Added predictive value of omics data: specific issues related to validation illustrated by two case studies

Riccardo De Bin, Tobias Herold, Anne-Laure Boulesteix

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Presenting simulation results in a nested loop plot

Gerta Rücker, Guido Schwarzer

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Testing non-inferiority of a new treatment in three-arm clinical trials with binary endpoints

Nian-Sheng Tang, Bin Yu, Man-Lai Tang

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A methodological systematic review of what’s wrong with meta-ethnography reporting

Emma F France, Nicola Ring, Rebecca Thomas, Jane Noyes, Margaret Maxwell, Ruth Jepson

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Visualizing inconsistency in network meta-analysis by independent path decomposition

Ulrike Krahn, Harald Binder, Jochem König

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Conditional Poisson models: a flexible alternative to conditional logistic case cross-over analysis

Ben G Armstrong, Antonio Gasparrini, Aurelio Tobias

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Analysis of four studies in a comparative framework reveals: health linkage consent rates on British cohort studies higher than on UK household panel surveys

Gundi Knies, Jonathan Burton

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Identifying complications of interventional procedures from UK routine healthcare databases: a systematic search for methods using clinical codes

Kim Keltie, Helen Cole, Mick Arber, Hannah Patrick, John Powell, Bruce Campbell, Andrew Sims

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A trivariate meta-analysis of diagnostic studies accounting for prevalence and non-evaluable subjects: re-evaluation of the meta-analysis of coronary CT angiography studies

Xiaoye Ma, Muhammad Fareed K Suri, Haitao Chu

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A modified regression method to test publication bias in meta-analyses with binary outcomes

Zhi-Chao Jin, Cheng Wu, Xiao-Hua Zhou, Jia He

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Model development including interactions with multiple imputed data

Gillian M Hendry, Rajen N Naidoo, Temesgen Zewotir, Delia North, Graciela Mentz

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Modern modelling techniques are data hungry: a simulation study for predicting dichotomous endpoints

Tjeerd van der Ploeg, Peter C Austin, Ewout W Steyerberg

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Indirect comparisons of ranibizumab and dexamethasone in macular oedema secondary to retinal vein occlusion

Howard HZ Thom, Gorana Capkun, Richard M Nixon, Alberto Ferreira

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Genomic investigation of etiologic heterogeneity: methodologic challenges

Colin B Begg, Venkatraman E Seshan, Emily C Zabor, Helena Furberg, Arshi Arora, Ronglai Shen, Jodi K Maranchie, Matthew E Nielsen, W Kimryn Rathmell, Sabina Signoretti, Pheroze Tamboli, Jose A Karam, Toni K Choueiri, A Ari Hakimi, James J Hsieh

01.12.2014 | Technical advance | Ausgabe 1/2014 Open Access

Comparative efficiency research (COMER): meta-analysis of cost-effectiveness studies

Carlos Crespo, Antonio Monleon, Walter Díaz, Martín Ríos

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Creating groups with similar expected behavioural response in randomized controlled trials: a fuzzy cognitive map approach

Philippe J Giabbanelli, Rik Crutzen

01.12.2014 | Debate | Ausgabe 1/2014 Open Access

Shame for disrespecting evidence: the personal consequences of insufficient respect for structural equation model testing

Leslie A Hayduk

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Bias in the study of prediction of change: a Monte Carlo simulation study of the effects of selective attrition and inappropriate modeling of regression toward the mean

Kristin Gustavson, Ingrid Borren

01.12.2014 | Technical advance | Ausgabe 1/2014 Open Access

Assessing outcomes of large-scale public health interventions in the absence of baseline data using a mixture of Cox and binomial regressions

Thierry Duchesne, Belkacem Abdous, Catherine M Lowndes, Michel Alary

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Concordance between administrative claims and registry data for identifying metastasis to the bone: an exploratory analysis in prostate cancer

Eberechukwu Onukwugha, Candice Yong, Arif Hussain, Brian Seal, C Daniel Mullins

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Modeling trajectories of perceived leg exertion during maximal cycle ergometer exercise in children and adolescents

Marianne Huebner, Zhen Zhang, Terry Therneau, Patrick McGrath, Paolo Pianosi

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

A Monte Carlo simulation study comparing linear regression, beta regression, variable-dispersion beta regression and fractional logit regression at recovering average difference measures in a two sample design

Christopher Meaney, Rahim Moineddin

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

The Hartung-Knapp-Sidik-Jonkman method for random effects meta-analysis is straightforward and considerably outperforms the standard DerSimonian-Laird method

Joanna IntHout, John PA Ioannidis, George F Borm

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Evaluating bias due to data linkage error in electronic healthcare records

Katie Harron, Angie Wade, Ruth Gilbert, Berit Muller-Pebody, Harvey Goldstein

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Is expert opinion reliable when estimating transition probabilities? The case of HCV-related cirrhosis in Egypt

Anthony Cousien, Dorothée Obach, Sylvie Deuffic-Burban, Aya Mostafa, Gamal Esmat, Valérie Canva, Mohamed El Kassas, Mohammad El-Sayed, Wagida A Anwar, Arnaud Fontanet, Mostafa K Mohamed, Yazdan Yazdanpanah

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Evaluating the performance of copula models in phase I-II clinical trials under model misspecification

Kristen Cunanan, Joseph S Koopmeiners

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Model-based estimation of measures of association for time-to-event outcomes

Federico Ambrogi, Elia Biganzoli, Patrizia Boracchi

01.12.2014 | Correspondence | Ausgabe 1/2014 Open Access

The thresholds for statistical and clinical significance – a five-step procedure for evaluation of intervention effects in randomised clinical trials

Janus Christian Jakobsen, Christian Gluud, Per Winkel, Theis Lange, Jørn Wetterslev

01.12.2014 | Correspondence | Ausgabe 1/2014 Open Access

Meta-ethnography 25 years on: challenges and insights for synthesising a large number of qualitative studies

Francine Toye, Kate Seers, Nick Allcock, Michelle Briggs, Eloise Carr, Karen Barker

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Comparing classification methods for diffuse reflectance spectra to improve tissue specific laser surgery

Alexander Engelhardt, Rajesh Kanawade, Christian Knipfer, Matthias Schmid, Florian Stelzle, Werner Adler

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Network meta-analysis of multiple outcome measures accounting for borrowing of information across outcomes

Felix A Achana, Nicola J Cooper, Sylwia Bujkiewicz, Stephanie J Hubbard, Denise Kendrick, David R Jones, Alex J Sutton

01.12.2014 | Technical advance | Ausgabe 1/2014 Open Access

Developing a weighting strategy to include mobile phone numbers into an ongoing population health survey using an overlapping dual-frame design with limited benchmark information

Margo L Barr, Raymond A Ferguson, Phil J Hughes, David G Steel

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Network meta-analysis of (individual patient) time to event data alongside (aggregate) count data

Pedro Saramago, Ling-Hsiang Chuang, Marta O Soares

01.12.2014 | Research article | Ausgabe 1/2014 Open Access

Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range

Xiang Wan, Wenqian Wang, Jiming Liu, Tiejun Tong

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