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Zeitschrift

BMC Medical Research Methodology

BMC Medical Research Methodology 1/2013

Ausgabe 1/2013

Inhaltsverzeichnis ( 155 Artikel )

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Modelling heterogeneity variances in multiple treatment comparison meta-analysis – Are informative priors the better solution?

Kristian Thorlund, Lehana Thabane, Edward J Mills

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A multi-state model to estimate incidence of heroin use

Albert Sánchez-Niubò, Odd O Aalen, Antònia Domingo-Salvany, Ellen J Amundsen, Josep Fortiana, Kjetil Røysland

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Comparison of population-averaged and cluster-specific models for the analysis of cluster randomized trials with missing binary outcomes: a simulation study

Jinhui Ma, Parminder Raina, Joseph Beyene, Lehana Thabane

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Effectiveness of Pilates exercise in treating people with chronic low back pain: a systematic review of systematic reviews

Cherie Wells, Gregory S Kolt, Paul Marshall, Bridget Hill, Andrea Bialocerkowski

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Participant recruitment in sensitive surveys: a comparative trial of ‘opt in’ versus ‘opt out’ approaches

Katherine J Hunt, Natalie Shlomo, Julia Addington-Hall

01.12.2013 | Correspondence | Ausgabe 1/2013 Open Access

Qualitative systematic reviews of treatment burden in stroke, heart failure and diabetes - Methodological challenges and solutions

Katie Gallacher, Bhautesh Jani, Deborah Morrison, Sara Macdonald, David Blane, Patricia Erwin, Carl R May, Victor M Montori, David T Eton, Fiona Smith, David G Batty, Frances S Mair

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Evaluating audio computer assisted self-interviews in urban south African communities: evidence for good suitability and reduced social desirability bias of a cross-sectional survey on sexual behaviour

Roxanne Beauclair, Fei Meng, Nele Deprez, Marleen Temmerman, Alex Welte, Niel Hens, Wim Delva

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Shape information from glucose curves: Functional data analysis compared with traditional summary measures

Kathrine Frey Frøslie, Jo Røislien, Elisabeth Qvigstad, Kristin Godang, Jens Bollerslev, Nanna Voldner, Tore Henriksen, Marit B Veierød

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Reducing the time-lag between onset of chest pain and seeking professional medical help: a theory-based review

Susan K Baxter, Peter Allmark

01.12.2013 | Technical advance | Ausgabe 1/2013 Open Access

Multivariate permutation test to compare survival curves for matched data

Stefania Galimberti, Maria Grazia Valsecchi

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

The effects of capping the alcohol consumption distribution and relative risk functions on the estimated number of deaths attributable to alcohol consumption in the European Union in 2004

Gerrit Gmel, Kevin D Shield, Tara AK Kehoe-Chan, Jürgen Rehm

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Selecting optimal screening items for delirium: an application of item response theory

Frances M Yang, Richard N Jones, Sharon K Inouye, Douglas Tommet, Paul K Crane, James L Rudolph, Long H Ngo, Edward R Marcantonio

01.12.2013 | Technical advance | Ausgabe 1/2013 Open Access

On the proportional hazards model for occupational and environmental case-control analyses

Héloïse Gauvin, Aude Lacourt, Karen Leffondré

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A Taiwanese food frequency questionnaire correlates with plasma docosahexaenoic acid but not with plasma eicosapentaenoic acid levels: questionnaires and plasma biomarkers

Kuo-Liong Chien, Meei-Shyuan Lee, Yi-Tsen Tsai, Pey-Rong Chen, Hung-Ju Lin, Hsiu-Ching Hsu, Yuan-The Lee, Ming-Fong Chen

01.12.2013 | Correspondence | Ausgabe 1/2013 Open Access

Developing longitudinal qualitative designs: lessons learned and recommendations for health services research

Lynn Calman, Lisa Brunton, Alex Molassiotis

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

From accuracy to patient outcome and cost-effectiveness evaluations of diagnostic tests and biomarkers: an exemplary modelling study

Hendrik Koffijberg, Bas van Zaane, Karel GM Moons

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Assessment of reproducibility of cancer survival risk predictions across medical centers

Hung-Chia Chen, James J Chen

01.12.2013 | Study protocol | Ausgabe 1/2013 Open Access

Protocol for a systematic review and individual patient data meta-analysis of prognostic factors of foot ulceration in people with diabetes: the international research collaboration for the prediction of diabetic foot ulcerations (PODUS)

Fay Crawford, Chantelle Anandan, Francesca M Chappell, Gordon D Murray, Jacqueline F Price, Aziz Sheikh, Colin R Simpson, Martin Maxwell, Gerard P Stansby, Matthew J Young, Caroline A Abbott, Andrew JM Boulton, Edward J Boyko, Thomas Kastenbauer, Graham P Leese, Matteo Monami, Matilde Monteiro-Soares, Stephen J Rith-Najarian, Aristidis Veves, Nikki Coates, William J Jeffcoate, Nicola Leech, Tom Fahey, Jayne Tierney

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Bayesian methods to determine performance differences and to quantify variability among centers in multi-center trials: the IHAST trial

Emine O Bayman, Kathryn M Chaloner, Bradley J Hindman, Michael M Todd, the IHAST Investigators

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A new approach to analyse longitudinal epidemiological data with an excess of zeros

Alette S Spriensma, Tibor RS Hajos, Michiel R de Boer, Martijn W Heymans, Jos WR Twisk

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Reducing and meta-analysing estimates from distributed lag non-linear models

Antonio Gasparrini, Ben Armstrong

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Ascertaining invasive breast cancer cases; the validity of administrative and self-reported data sources in Australia

Anna Kemp, David B Preen, Christobel Saunders, C D’Arcy J Holman, Max Bulsara, Kris Rogers, Elizabeth E Roughead

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A statistical model to assess the risk of communicable diseases associated with multiple exposures in healthcare settings

Cécile Payet, Nicolas Voirin, Philippe Vanhems, René Ecochard

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Agreement between self-reported and measured weight and height collected in general practice patients: a prospective study

Sze Lin Yoong, Mariko Leanne Carey, Catherine D’Este, Robert William Sanson-Fisher

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Dealing with missing data in the Center for Epidemiologic Studies Depression self-report scale: a study based on the French E3N cohort

Noémie Resseguier, Hélène Verdoux, Roch Giorgi, Françoise Clavel-Chapelon, Xavier Paoletti

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Misclassification of incident conditions using claims data: impact of varying the period used to exclude pre-existing disease

Robert I Griffiths, Cynthia D O’Malley, Robert J Herbert, Mark D Danese

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Impact of misspecifying the distribution of a prognostic factor on power and sample size for testing treatment interactions in clinical trials

William M Reichmann, Michael P LaValley, David R Gagnon, Elena Losina

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Trauma registry record linkage: methodological approach to benefit from complementary data using the example of the German Pelvic Injury Register and the TraumaRegister DGU®

Markus Burkhardt, Ulrike Nienaber, Joerg H Holstein, Ulf Culemann, Bertil Bouillon, Emin Aghayev, Thomas Paffrath, Marc Maegele, Tim Pohlemann, Rolf Lefering, TraumaRegister DGU®, and Pelvic Injury Register of the German Trauma Society

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Representativeness of an HIV cohort of the sites from which it is recruiting: results from the Ontario HIV Treatment Network (OHTN) cohort study

Janet Raboud, DeSheng Su, Ann N Burchell, Sandra Gardner, Sharon Walmsley, Ahmed M Bayoumi, Sandra Blitz, Curtis Cooper, Irving Salit, Jeff Cohen, Sean B Rourke, Mona R Loutfy

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Surveying alcohol and other drug use through telephone sampling: a comparison of landline and mobile phone samples

Michael Livingston, Paul Dietze, Jason Ferris, Darren Pennay, Linda Hayes, Simon Lenton

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Empirical comparison of methods for analyzing multiple time-to-event outcomes in a non-inferiority trial: a breast cancer study

Sameer Parpia, Lehana Thabane, Jim A Julian, Timothy J Whelan, Mark N Levine

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Limited benefit of repeating a sensitive question in a cross-sectional sexual health study

Abigail Norris Turner, Prabasaj Paul, Alison H Norris

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Information-based measure of disagreement for more than two observers: a useful tool to compare the degree of observer disagreement

Teresa Henriques, Luis Antunes, João Bernardes, Mara Matias, Diogo Sato, Cristina Costa-Santos

01.12.2013 | Debate | Ausgabe 1/2013 Open Access

Enhancing the scoping study methodology: a large, inter-professional team’s experience with Arksey and O’Malley’s framework

Helena ML Daudt, Catherine van Mossel, Samantha J Scott

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Flexible parametric modelling of cause-specific hazards to estimate cumulative incidence functions

Sally R Hinchliffe, Paul C Lambert

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Magnitude of discordance between registry data and death certificate when evaluating leading causes of death in dialysis patients

Jean-Philippe Lafrance, Elham Rahme, Sameena Iqbal, Martine Leblanc, Vincent Pichette, Naoual Elftouh, Michel Vallée

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Estimating relative intensity using individualized accelerometer cutpoints: the importance of fitness level

Cemal Ozemek, Heather L Cochran, Scott J Strath, Wonwoo Byun, Leonard A Kaminsky

01.12.2013 | Correspondence | Ausgabe 1/2013 Open Access

“Best fit” framework synthesis: refining the method

Christopher Carroll, Andrew Booth, Joanna Leaviss, Jo Rick

01.12.2013 | Reviewer acknowledgement | Ausgabe 1/2013 Open Access

Annual acknowledgement of manuscript reviewers

Adrian Aldcroft

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

The use of systematic reviews in the planning, design and conduct of randomised trials: a retrospective cohort of NIHR HTA funded trials

Ashley P Jones, Elizabeth Conroy, Paula R Williamson, Mike Clarke, Carrol Gamble

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A systematic review of publications assessing reliability and validity of the Behavioral Risk Factor Surveillance System (BRFSS), 2004–2011

Carol Pierannunzi, Shaohua Sean Hu, Lina Balluz

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Cluster-based exposure variation analysis

Afshin Samani, Svend Erik Mathiassen, Pascal Madeleine

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Agreement between pre-post measures of change and transition ratings as well as then-tests

Thorsten Meyer, Susanne Richter, Heiner Raspe

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Using the random forest method to detect a response shift in the quality of life of multiple sclerosis patients: a cohort study

Mohamed Boucekine, Anderson Loundou, Karine Baumstarck, Patricia Minaya-Flores, Jean Pelletier, Badih Ghattas, Pascal Auquier

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Advancing current approaches to disease management evaluation: capitalizing on heterogeneity to understand what works and for whom

Arianne MJ Elissen, John L Adams, Marieke Spreeuwenberg, Inge GP Duimel-Peeters, Cor Spreeuwenberg, Ariel Linden, Hubertus JM Vrijhoef

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Overview of data-synthesis in systematic reviews of studies on outcome prediction models

Tobias van den Berg, Martijn W Heymans, Stephanie S Leone, David Vergouw, Jill A Hayden, Arianne P Verhagen, Henrica CW de Vet

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Applications of functional data analysis: A systematic review

Shahid Ullah, Caroline F Finch

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Can we quantify harm in general practice records? An assessment of precision and power using computer simulation

Carl de Wet, Paul Johnson, Catherine O’Donnell, Paul Bowie

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Using case study within a sequential explanatory design to evaluate the impact of specialist and advanced practice roles on clinical outcomes: the SCAPE study

Joan G Lalor, Dympna Casey, Naomi Elliott, Imelda Coyne, Catherine Comiskey, Agnes Higgins, Kathy Murphy, Declan Devane, Cecily Begley

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A threshold method for immunological correlates of protection

Xuan Chen, Fabrice Bailleux, Kamal Desai, Li Qin, Andrew J Dunning

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A nonparametric random coefficient approach for life expectancy growth using a hierarchical mixture likelihood model with application to regional data from North Rhine-Westphalia (Germany)

Dankmar Böhning, Sarah Karasek, Claudia Terschüren, Rolf Annuß, Rainer Fehr

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

‘Trying to pin down jelly’ - exploring intuitive processes in quality assessment for meta-ethnography

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

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Methodological approaches to population based research of screening procedures in the presence of selection bias and exposure measurement error: colonoscopy and colorectal cancer outcomes in Ontario

Binu J Jacob, Rinku Sutradhar, Rahim Moineddin, Nancy N Baxter, David R Urbach

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A comparison of Cohen’s Kappa and Gwet’s AC1 when calculating inter-rater reliability coefficients: a study conducted with personality disorder samples

Nahathai Wongpakaran, Tinakon Wongpakaran, Danny Wedding, Kilem L Gwet

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A graphical tool for locating inconsistency in network meta-analyses

Ulrike Krahn, Harald Binder, Jochem König

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Assessing potential sources of clustering in individually randomised trials

Brennan C Kahan, Tim P Morris

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

How are European birth-cohort studies engaging and consulting with young cohort members?

Patricia J Lucas, Debra Allnock, Tricia Jessiman

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Clinical trial simulation to evaluate power to compare the antiviral effectiveness of two hepatitis C protease inhibitors using nonlinear mixed effect models: a viral kinetic approach

Cédric Laouénan, Jeremie Guedj, France Mentré

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Recruitment strategies and yields for the Pathobiology of Prediabetes in a Biracial Cohort: a prospective natural history study of incident dysglycemia

Sotonte Ebenibo, Chimaroke Edeoga, Ann Ammons, Nonso Egbuonu, Samuel Dagogo-Jack, the Pathobiology of Prediabetes in a Biracial Cohort (POP-ABC) Research Group

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Prediction models for clustered data: comparison of a random intercept and standard regression model

Walter Bouwmeester, Jos WR Twisk, Teus H Kappen, Wilton A van Klei, Karel GM Moons, Yvonne Vergouwe

01.12.2013 | Software | Ausgabe 1/2013 Open Access

An R package for analyzing and modeling ranking data

Paul H Lee, Philip LH Yu

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

External validation of a Cox prognostic model: principles and methods

Patrick Royston, Douglas G Altman

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Predicting hemoglobin levels in whole blood donors using transition models and mixed effects models

Kazem Nasserinejad, Wim de Kort, Mireille Baart, Arnošt Komárek, Joost van Rosmalen, Emmanuel Lesaffre

01.12.2013 | Correspondence | Ausgabe 1/2013 Open Access

Novel study design to assess the utility of the copd assessment test in a primary care setting

Kevin Gruffydd-Jones, Helen Marsden, Steve Holmes, Peter Kardos, Roger Escamilla, Roberto Dal Negro, June Roberts, Gilbert Nadeau, David Leather, Paul Jones

01.12.2013 | Correspondence | Ausgabe 1/2013 Open Access

Systematically reviewing and synthesizing evidence from conversation analytic and related discursive research to inform healthcare communication practice and policy: an illustrated guide

Ruth H Parry, Victoria Land

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Validation of a registry-derived risk algorithm based on treatment protocol as a proxy for disease risk in childhood acute lymphoblastic leukemia

Sumit Gupta, Jason D Pole, Astrid Guttmann, Lillian Sung

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Phase IV non-inferiority trials and additional claims of benefit

Rosemarie DLC Bernabe, Grace Wangge, Mirjam J Knol, Olaf H Klungel, Johannes JM van Delden, Anthonius de Boer, Arno W Hoes, Jan AM Raaijmakers, Ghislaine JMW van Thiel

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Using Bonferroni, BIC and AIC to assess evidence for alternative biological pathways: covariate selection for the multilevel Embryo-Uterus model

Christos Stylianou, Andrew Pickles, Stephen A Roberts

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Ensemble-based methods for forecasting census in hospital units

Devin C Koestler, Hernando Ombao, Jesse Bender

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Rethinking sources of representative controls for the conduct of case–control studies in minority populations

Elisa V Bandera, Urmila Chandran, Gary Zirpoli, Susan E McCann, Gregory Ciupak, Christine B Ambrosone

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

“Let’s get the best quality research we can”: public awareness and acceptance of consent to use existing data in health research: a systematic review and qualitative study

Elizabeth M Hill, Emma L Turner, Richard M Martin, Jenny L Donovan

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Views on the peer review system of biomedical journals: an online survey of academics from high-ranking universities

Roger Chun-Man Ho, Kwok-Kei Mak, Ren Tao, Yanxia Lu, Jeffrey R Day, Fang Pan

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

ClinicalTrials.gov registration can supplement information in abstracts for systematic reviews: a comparison study

Roberta W Scherer, Lynn Huynh, Ann-Margret Ervin, Jakeisha Taylor, Kay Dickersin

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Inference of synergy/antagonism between anticancer drugs from the pooled analysis of clinical trials

Wenfeng Kang, Robert S DiPaola, Alexei Vazquez

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Using imputed pre-treatment cholesterol in a propensity score model to reduce confounding by indication: results from the multi-ethnic study of atherosclerosis

Neal W Jorgensen, Christopher T Sibley, Robyn L McClelland

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Statistical process control of mortality series in the Australian and New Zealand Intensive Care Society (ANZICS) adult patient database: implications of the data generating process

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

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Measuring teamwork and taskwork of community-based “teams” delivering life-saving health interventions in rural Zambia: a qualitative study

Kojo Yeboah-Antwi, Gail Snetro-Plewman, Karen Z Waltensperger, Davidson H Hamer, Chilobe Kambikambi, William MacLeod, Stephen Filumba, Bias Sichamba, David Marsh

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

OvidSP Medline-to-PubMed search filter translation: a methodology for extending search filter range to include PubMed's unique content

Raechel A Damarell, Jennifer J Tieman, Ruth M Sladek

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Confidence regions for repeated measures ANOVA power curves based on estimated covariance

Matthew J Gribbin, Yueh-Yun Chi, Paul W Stewart, Keith E Muller

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Correction of the significance level when attempting multiple transformations of an explanatory variable in generalized linear models

Benoit Liquet, Jérémie Riou

01.12.2013 | Correspondence | Ausgabe 1/2013 Open Access

Acceptance checklist for clinical effectiveness pilot trials: a systematic approach

Georgina Charlesworth, Karen Burnell, Juanita Hoe, Martin Orrell, Ian Russell

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Multi-state model for studying an intermediate event using time-dependent covariates: application to breast cancer

Carolina Meier-Hirmer, Martin Schumacher

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Proton pump inhibitors and the risk of pneumonia: a comparison of cohort and self-controlled case series designs

Emmae N Ramsay, Nicole L Pratt, Philip Ryan, Elizabeth E Roughead

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Testing the proportional hazards assumption in case-cohort analysis

Xiaonan Xue, Xianhong Xie, Marc Gunter, Thomas E Rohan, Sylvia Wassertheil-Smoller, Gloria YF Ho, Dominic Cirillo, Herbert Yu, Howard D Strickler

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Validity of self-reported height and weight among adolescents: the importance of reporting capability

Mette Rasmussen, Bjørn E Holstein, Ole Melkevik, Mogens Trab Damsgaard

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

The impact of deployment experience and prior healthcare utilization on enrollment in a large military cohort study

Jaime L Horton, Isabel G Jacobson, Alyson J Littman, John E Alcaraz, Besa Smith, Nancy F Crum-Cianflone

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Use of generalised additive models to categorise continuous variables in clinical prediction

Irantzu Barrio, Inmaculada Arostegui, José M Quintana, IRYSS-COPD Group

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

The McNemar test for binary matched-pairs data: mid-p and asymptotic are better than exact conditional

Morten W Fagerland, Stian Lydersen, Petter Laake

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Understanding recruitment: outcomes associated with alternate methods for seed selection in respondent driven sampling

John L Wylie, Ann M Jolly

01.12.2013 | Commentary | Ausgabe 1/2013 Open Access

A tutorial on sensitivity analyses in clinical trials: the what, why, when and how

Lehana Thabane, Lawrence Mbuagbaw, Shiyuan Zhang, Zainab Samaan, Maura Marcucci, Chenglin Ye, Marroon Thabane, Lora Giangregorio, Brittany Dennis, Daisy Kosa, Victoria Borg Debono, Rejane Dillenburg, Vincent Fruci, Monica Bawor, Juneyoung Lee, George Wells, Charles H Goldsmith

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Sample size re-assessment leading to a raised sample size does not inflate type I error rate under mild conditions

Per Broberg

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Screened selection design for randomised phase II oncology trials: an example in chronic lymphocytic leukaemia

Christina Yap, Andrew Pettitt, Lucinda Billingham

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Risk of bias of randomized controlled trials published in orthopaedic journals

Laura E Chess, Joel Gagnier

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Piecewise exponential models to assess the influence of job-specific experience on the hazard of acute injury for hourly factory workers

Jessica Kubo, Mark R Cullen, Linda Cantley, Martin Slade, Baylah Tessier-Sherman, Oyebode Taiwo, Manisha Desai

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Cognitive mapping: using local knowledge for planning health research

Jonathan Stadler, Charles Dugmore, Emilie Venables, Catherine MacPhail, Sinead Delany-Moretlwe

01.12.2013 | Debate | Ausgabe 1/2013 Open Access

On the assessment of the added value of new predictive biomarkers

Weijie Chen, Frank W Samuelson, Brandon D Gallas, Le Kang, Berkman Sahiner, Nicholas Petrick

01.12.2013 | Technical advance | Ausgabe 1/2013 Open Access

The agreement chart

Shrikant I Bangdiwala, Viswanathan Shankar

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Adjusting for multiple prognostic factors in the analysis of randomised trials

Brennan C Kahan, Tim P Morris

01.12.2013 | Correspondence | Ausgabe 1/2013 Open Access

Selecting a sample size for studies with repeated measures

Yi Guo, Henrietta L Logan, Deborah H Glueck, Keith E Muller

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Comparison of the risk factors effects between two populations: two alternative approaches illustrated by the analysis of first and second kidney transplant recipients

Katy Trébern-Launay, Magali Giral, Jacques Dantal, Yohann Foucher

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Empirical study of correlated survival times for recurrent events with proportional hazards margins and the effect of correlation and censoring

Rodrigo Villegas, Olga Julià, Jordi Ocaña

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Is a large scale community programme as effective as a community rehabilitation programme delivered in the setting of a clinical trial?

Elizabeth C Goyder, Mark Strong, Angela Green, Michael W Holmes, Gail Miles, Orla Reddington, Rod Lawson, Andrew Lee, Gurnam Basran

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

An audit of sample sizes for pilot and feasibility trials being undertaken in the United Kingdom registered in the United Kingdom Clinical Research Network database

Sophie AM Billingham, Amy L Whitehead, Steven A Julious

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Optimising the use of electronic health records to estimate the incidence of rheumatoid arthritis in primary care: what information is hidden in free text?

Elizabeth Ford, Amanda Nicholson, Rob Koeling, A Rosemary Tate, John Carroll, Lesley Axelrod, Helen E Smith, Greta Rait, Kevin A Davies, Irene Petersen, Tim Williams, Jackie A Cassell

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A counterfactual approach to bias and effect modification in terms of response types

Etsuji Suzuki, Toshiharu Mitsuhashi, Toshihide Tsuda, Eiji Yamamoto

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Are concomitant treatments confounding factors in randomized controlled trials on intensive blood-glucose control in type 2 diabetes? a systematic review

Rémy Boussageon, Irène Supper, Sylvie Erpeldinger, Michel Cucherat, Theodora Bejan-Angoulvant, Behrouz Kassai, Catherine Cornu, François Gueyffier

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Quality of life in dementia: a study on proxy bias

Alexander MM Arons, Paul FM Krabbe, Carla JM Schölzel-Dorenbos, Gert Jan van der Wilt, Marcel GM Olde Rikkert

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Consensus-based recommendations for investigating clinical heterogeneity in systematic reviews

Joel J Gagnier, Hal Morgenstern, Doug G Altman, Jesse Berlin, Stephanie Chang, Peter McCulloch, Xin Sun, David Moher, for the Ann Arbor Clinical Heterogeneity Consensus Group

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Strategies for maximizing consent rates for child dental health surveys: a randomised controlled trial

Anne-Marie Glenny, Helen V Worthington, Keith M Milsom, Eric Rooney, Martin Tickle

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Beyond case fatality rate: using potential impact fraction to estimate the effect of increasing treatment uptake on mortality

Nicholas Mitsakakis, Harindra C Wijeysundera, Murray Krahn

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

The predictive value of mental health for long-term sickness absence: the Major Depression Inventory (MDI) and the Mental Health Inventory (MHI-5) compared

Sannie Vester Thorsen, Reiner Rugulies, Pernille U Hjarsbech, Jakob Bue Bjorner

01.12.2013 | Correspondence | Ausgabe 1/2013 Open Access

Using the framework method for the analysis of qualitative data in multi-disciplinary health research

Nicola K Gale, Gemma Heath, Elaine Cameron, Sabina Rashid, Sabi Redwood

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

The reliability of a quality appraisal tool for studies of diagnostic reliability (QAREL)

Nicholas Lucas, Petra Macaskill, Les Irwig, Robert Moran, Luke Rickards, Robin Turner, Nikolai Bogduk

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Making sense of complex data: a mapping process for analyzing findings of a realist review on guideline implementability

Monika Kastner, Julie Makarski, Leigh Hayden, Lisa Durocher, Ananda Chatterjee, Melissa Brouwers, Onil Bhattacharyya

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Derivation and assessment of risk prediction models using case-cohort data

Jean Sanderson, Simon G Thompson, Ian R White, Thor Aspelund, Lisa Pennells

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Assessing regression to the mean effects in health care initiatives

Ariel Linden

01.12.2013 | Correspondence | Ausgabe 1/2013 Open Access

Recommendations for a uniform assessment of publication bias related to funding source

Marlies van Lent, John Overbeke, Henk J Out

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Concordance between administrative health data and medical records for diabetes status in coronary heart disease patients: a retrospective linked data study

Lee Nedkoff, Matthew Knuiman, Joseph Hung, Frank M Sanfilippo, Judith M Katzenellenbogen, Tom G Briffa

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Inconsistency in the items included in tools used in general health research and physical therapy to evaluate the methodological quality of randomized controlled trials: a descriptive analysis

Susan Armijo-Olivo, Jorge Fuentes, Maria Ospina, Humam Saltaji, Lisa Hartling

01.12.2013 | Debate | Ausgabe 1/2013 Open Access

Integrating and extending cohort studies: lessons from the eXtending Treatments, Education and Networks in Depression (xTEND) study

Joanne Allen, Kerry J Inder, Terry J Lewin, John R Attia, Frances J Kay-Lambkin, Amanda L Baker, Trevor Hazell, Brian J Kelly

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Heterogeneity and event dependence in the analysis of sickness absence

Isabel Torá-Rocamora, David Gimeno, George Delclos, Fernando G Benavides, Rafael Manzanera, Josefina Jardí, Constança Alberti, Yutaka Yasui, José Miguel Martínez

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Shortening the Current Opioid Misuse Measure via computer-based testing: a retrospective proof-of-concept study

Matthew D Finkelman, Ronald J Kulich, Driss Zoukhri, Niels Smits, Stephen F Butler

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A systematic review of cluster randomised trials in residential facilities for older people suggests how to improve quality

Karla Diaz-Ordaz, Robert Froud, Bart Sheehan, Sandra Eldridge

01.12.2013 | Technical advance | Ausgabe 1/2013 Open Access

Direct risk standardisation: a new method for comparing casemix adjusted event rates using complex models

Jon Nicholl, Richard M Jacques, Michael J Campbell

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Quality of reporting of complex healthcare interventions and applicability of the CReDECI list - a survey of publications indexed in PubMed

Ralph Möhler, Gabriele Bartoszek, Gabriele Meyer

01.12.2013 | Technical advance | Ausgabe 1/2013 Open Access

Towards a methodology for cluster searching to provide conceptual and contextual “richness” for systematic reviews of complex interventions: case study (CLUSTER)

Andrew Booth, Janet Harris, Elizabeth Croot, Jane Springett, Fiona Campbell, Emma Wilkins

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Screening for data clustering in multicenter studies: the residual intraclass correlation

Laure Wynants, Dirk Timmerman, Tom Bourne, Sabine Van Huffel, Ben Van Calster

01.12.2013 | Debate | Ausgabe 1/2013 Open Access

How confidence intervals become confusion intervals

James McCormack, Ben Vandermeer, G Michael Allan

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A semi-parametric approach to estimate risk functions associated with multi-dimensional exposure profiles: application to smoking and lung cancer

David I Hastie, Silvia Liverani, Lamiae Azizi, Sylvia Richardson, Isabelle Stücker

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Perspectives on neurological patient registries: a literature review and focus group study

Lawrence Korngut, Gail MacKean, Lisa Casselman, Megan Johnston, Lundy Day, Darren Lam, Diane Lorenzetti, Janet Warner, Nathalie Jetté, Tamara Pringsheim

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Reference management software for systematic reviews and meta-analyses: an exploration of usage and usability

Diane L Lorenzetti, William A Ghali

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Association between funding source, methodological quality and research outcomes in randomized controlled trials of synbiotics, probiotics and prebiotics added to infant formula: A Systematic Review

Mary N Mugambi, Alfred Musekiwa, Martani Lombard, Taryn Young, Reneé Blaauw

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

How experiences become data: the process of eliciting adverse event, medical history and concomitant medication reports in antimalarial and antiretroviral interaction trials

Elizabeth N Allen, Adiel K Mushi, Isolide S Massawe, Lasse S Vestergaard, Martha Lemnge, Sarah G Staedke, Ushma Mehta, Karen I Barnes, Clare IR Chandler

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Effects of aggregation of drug and diagnostic codes on the performance of the high-dimensional propensity score algorithm: an empirical example

Hoa V Le, Charles Poole, M Alan Brookhart, Victor J Schoenbach, Kathleen J Beach, J Bradley Layton, Til Stürmer

01.12.2013 | Technical advance | Ausgabe 1/2013 Open Access

A regression model for risk difference estimation in population-based case–control studies clarifies gender differences in lung cancer risk of smokers and never smokers

Stephanie A Kovalchik, Sara De Matteis, Maria Teresa Landi, Neil E Caporaso, Ravi Varadhan, Dario Consonni, Andrew W Bergen, Hormuzd A Katki, Sholom Wacholder

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Diagnosing problems with imputation models using the Kolmogorov-Smirnov test: a simulation study

Cattram D Nguyen, John B Carlin, Katherine J Lee

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A multi-arm multi-stage clinical trial design for binary outcomes with application to tuberculosis

Daniel J Bratton, Patrick PJ Phillips, Mahesh KB Parmar

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Measurement error in time-series analysis: a simulation study comparing modelled and monitored data

Barbara K Butland, Ben Armstrong, Richard W Atkinson, Paul Wilkinson, Mathew R Heal, Ruth M Doherty, Massimo Vieno

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Using a social marketing framework to evaluate recruitment of a prospective study of genetic counseling and testing for the deaf community

Yoko Kobayashi, Patrick Boudreault, Karin Hill, Janet S Sinsheimer, Christina GS Palmer

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Is a randomised controlled trial of a maternity care intervention for pregnant adolescents possible? An Australian feasibility study

Jyai Allen, Helen Stapleton, Sally Tracy, Sue Kildea

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Adjusting for measurement error in baseline prognostic biomarkers included in a time-to-event analysis: a joint modelling approach

Michael J Crowther, Paul C Lambert, Keith R Abrams

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Exploratory randomized controlled trial evaluating the impact of a waiting list control design

John A Cunningham, Kypros Kypri, Jim McCambridge

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Comparison of sample characteristics in two pregnancy cohorts: community-based versus population-based recruitment methods

Brenda MY Leung, Sheila W McDonald, Bonnie J Kaplan, Gerald F Giesbrecht, Suzanne C Tough

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Estimation of gestational age in early pregnancy from crown-rump length when gestational age range is truncated: the case study of the INTERGROWTH-21stProject

Eric O Ohuma, Aris T Papageorghiou, Jose Villar, Douglas G Altman

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Quantitative summaries of treatment effect estimates obtained with network meta-analysis of survival curves to inform decision-making

Shannon Cope, Jeroen P Jansen

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Using the Bernoulli trial approaches for detecting ordered alternatives

Chia-Hao Chang, Chih-Chien Chin, Weichieh Wayne Yu, Ying-Yu Huang

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Lessons learnt recruiting to a multi-site UK cohort study to explore recovery of health and well-being after colorectal cancer (CREW study)

Deborah Fenlon, Kim Chivers Seymour, Ikumi Okamoto, Jane Winter, Alison Richardson, Julia Addington-Hall, Jessica L Corner, Peter W Smith, Christine M May, Matthew Breckons, Claire Foster

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Facilitating accrual to cancer control and supportive care trials: the clinical research associate perspective

David VanHoff, Tanya Hesser, Katherine Patterson Kelly, David Freyer, Susan Stork, Lillian Sung

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

The index ‘Treatment Duration Control’ for enabling randomized controlled trials with variation in duration of treatment of chronic pain patients

Hilbert W van der Glas, Robert J van Grootel

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Data processing costs for three posture assessment methods

Catherine Trask, Svend Erik Mathiassen, Jennie Jackson, Jens Wahlström

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

An international survey of physicians regarding clinical trials: a comparison between Kyoto University Hospital and Seoul National University Hospital

Toshiko Ito-Ihara, Jeong-Hwa Hong, Ock-Joo Kim, Eriko Sumi, Soo-Youn Kim, Shiro Tanaka, Keiichi Narita, Taichi Hatta, Eun-Kyung Choi, Kyu-Jin Choi, Takuya Miyagawa, Manabu Minami, Toshinori Murayama, Masayuki Yokode

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Google Scholar as replacement for systematic literature searches: good relative recall and precision are not enough

Martin Boeker, Werner Vach, Edith Motschall

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

A systematic review and meta-analysis of acute stroke unit care: What’s beyond the statistical significance?

Ying Sun, Dominique Paulus, Maria Eyssen, Johan Maervoet, Omer Saka

01.12.2013 | Research article | Ausgabe 1/2013 Open Access

Restricted mean survival time: an alternative to the hazard ratio for the design and analysis of randomized trials with a time-to-event outcome

Patrick Royston, Mahesh KB Parmar

01.12.2013 | Erratum | Ausgabe 1/2013 Open Access

Erratum to: Qualitative systematic reviews of treatment burden in stroke, heart failure and diabetes - Methodological challenges and solutions

Katie Gallacher, Bhautesh Jani, Deborah Morrison, Sara Macdonald, David Blane, Patricia Erwin, Carl R May, Victor M Montori, David T Eton, Fiona Smith, G David Batty, Frances S Mair

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