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Zeitschrift

BMC Medical Research Methodology

BMC Medical Research Methodology 1/2011

Ausgabe 1/2011

Inhaltsverzeichnis ( 176 Artikel )

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A multidisciplinary systematic review of the use of diagrams as a means of collecting data from research subjects: application, benefits and recommendations

Muriah J Umoquit, Peggy Tso, Helen ED Burchett, Mark J Dobrow

01.12.2011 | Debate | Ausgabe 1/2011 Open Access

One statistical test is sufficient for assessing new predictive markers

Andrew J Vickers, Angel M Cronin, Colin B Begg

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Methodological criteria for the assessment of moderators in systematic reviews of randomised controlled trials: a consensus study

Tamar Pincus, Clare Miles, Robert Froud, Martin Underwood, Dawn Carnes, Stephanie JC Taylor

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A clinical trial alert tool to recruit large patient samples and assess selection bias in general practice research

Stephanie Heinemann, Sabine Thüring, Sven Wedeken, Tobias Schäfer, Christa Scheidt-Nave, Mirko Ketterer, Wolfgang Himmel

01.12.2011 | Commentary | Ausgabe 1/2011 Open Access

The Australian 'FORM' approach to guideline development: The quest for the perfect system

Philipp Dahm, Benjamin Djulbegovic

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Imputation strategies for missing binary outcomes in cluster randomized trials

Jinhui Ma, Noori Akhtar-Danesh, Lisa Dolovich, Lehana Thabane, the CHAT investigators

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Methodological issues associated with collecting sensitive information over the telephone - experience from an Australian non-suicidal self-injury (NSSI) prevalence study

Anne W Taylor, Graham Martin, Eleonora Dal Grande, Sarah Swannell, Simon Fullerton, Philip Hazell, James E Harrison

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Validation of a case definition to define chronic dialysis using outpatient administrative data

Fiona M Clement, Matthew T James, Rick Chin, Scott W Klarenbach, Braden J Manns, Robert R Quinn, Pietro Ravani, Marcello Tonelli, Brenda R Hemmelgarn, the Alberta Kidney Disease Network

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Comparing methods to estimate treatment effects on a continuous outcome in multicentre randomized controlled trials: A simulation study

Rong Chu, Lehana Thabane, Jinhui Ma, Anne Holbrook, Eleanor Pullenayegum, Philip James Devereaux

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Dealing with substantial heterogeneity in Cochrane reviews. Cross-sectional study

Jeppe B Schroll, Rasmus Moustgaard, Peter C Gøtzsche

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

"Did the trial kill the intervention?" experiences from the development, implementation and evaluation of a complex intervention

Lydia Bird, Antony Arthur, Karen Cox

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A pseudo-R2measure for selecting genomic markers with crossing hazards functions

Sigrid Rouam, Thierry Moreau, Philippe Broët

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A worked example of "best fit" framework synthesis: A systematic review of views concerning the taking of some potential chemopreventive agents

Christopher Carroll, Andrew Booth, Katy Cooper

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A simulation model approach to analysis of the business case for eliminating health care disparities

David R Nerenz, Yung-wen Liu, Keoki L Williams, Kaan Tunceli, Huiwen Zeng

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Recruitment difficulties in a primary care cluster randomised trial: investigating factors contributing to general practitioners' recruitment of patients

Matthew J Page, Simon D French, Joanne E McKenzie, Denise A O'Connor, Sally E Green

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Psychometric properties of two physical activity questionnaires, the AQuAA and the PASE, in cancer patients

Roberto DK Liu, Laurien M Buffart, Marie José Kersten, Marjolein Spiering, Johannes Brug, Willem van Mechelen, Mai JM Chinapaw

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Large-scale, prospective, observational studies in patients with psoriasis and psoriatic arthritis: A systematic and critical review

Sue Langham, Julia Langham, Hans-Peter Goertz, Mark Ratcliffe

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Effect of reminders on mitigating participation bias in a case-control study

Clarence C Tam, Craig D Higgins, Laura C Rodrigues

01.12.2011 | Debate | Ausgabe 1/2011 Open Access

What counts as reliable evidence for public health policy: the case of circumcision for preventing HIV infection

Reidar K Lie, Franklin G Miller

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Design of cohort studies in chronic diseases using routinely collected databases when a prescription is used as surrogate outcome

Sara Lodi, James Carpenter, Peter Egger, Stephen Evans

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Can type of school be used as an alternative indicator of socioeconomic status in dental caries studies? A cross-sectional study

Chaiana Piovesan, Monica Carneiro Pádua, Thiago Machado Ardenghi, Fausto Medeiros Mendes, Gabriela Cunha Bonini

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

The comprehensive cohort model in a pilot trial in orthopaedic trauma

Rebecca S Kearney, Juul Achten, Nick R Parsons, Matthew L Costa

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Opt-out as an acceptable method of obtaining consent in medical research: a short report

Akke Vellinga, Martin Cormican, Belinda Hanahoe, Kathleen Bennett, Andrew W Murphy

01.12.2011 | Software | Ausgabe 1/2011 Open Access

Implementation of workflow engine technology to deliver basic clinical decision support functionality

Vojtech Huser, Luke V Rasmussen, Ryan Oberg, Justin B Starren

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Progression of liver cirrhosis to HCC: an application of hidden Markov model

Nicola Bartolomeo, Paolo Trerotoli, Gabriella Serio

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Validation of de-identified record linkage to ascertain hospital admissions in a cohort study

Alison Beauchamp, Andrew M Tonkin, Helen Kelsall, Vijaya Sundararajan, Dallas R English, Lalitha Sundaresan, Rory Wolfe, Gavin Turrell, Graham G Giles, Anna Peeters

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Estimating uncertainty of alcohol-attributable fractions for infectious and chronic diseases

Gerrit Gmel, Kevin D Shield, Hannah Frick, Tara Kehoe, Gerhard Gmel, Jürgen Rehm

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Good agreement between questionnaire and administrative databases for health care use and costs in patients with osteoarthritis

Daniel Pinto, M Clare Robertson, Paul Hansen, J Haxby Abbott

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Parametric methods outperformed non-parametric methods in comparisons of discrete numerical variables

Morten W Fagerland, Leiv Sandvik, Petter Mowinckel

01.12.2011 | Debate | Ausgabe 1/2011 Open Access

Exploratory trials, confirmatory observations: A new reasoning model in the era of patient-centered medicine

José A Sacristán

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Tolerability of the Oscar 2 ambulatory blood pressure monitor among research participants: a cross-sectional repeated measures study

Anthony J Viera, Kara Lingley, Alan L Hinderliter

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Representation of less-developed countries in Pharmacology journals: an online survey of corresponding authors

Dileep K Rohra

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

The care unit in nursing home research: Evidence in support of a definition

Carole A Estabrooks, Debra G Morgan, Janet E Squires, Anne-Marie Boström, Susan E Slaughter, Greta G Cummings, Peter G Norton

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Web-based computer adaptive assessment of individual perceptions of job satisfaction for hospital workplace employees

Tsair-Wei Chien, Wen-Pin Lai, Chih-Wei Lu, Weng-Chung Wang, Shih-Chung Chen, Hsien-Yi Wang, Shih-Bin Su

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Quantifying, displaying and accounting for heterogeneity in the meta-analysis of RCTs using standard and generalised Qstatistics

Jack Bowden, Jayne F Tierney, Andrew J Copas, Sarah Burdett

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Methodological challenges when estimating the effects of season and seasonal exposures on birth outcomes

Linn Beate Strand, Adrian G Barnett, Shilu Tong

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Do agreements between adolescent and parent reports on family socioeconomic status vary with household financial stress?

Christy Pu, Nicole Huang, Yiing-Jenq Chou

01.12.2011 | Debate | Ausgabe 1/2011 Open Access

Evaluating treatments in health care: The instability of a one-legged stool

Bonnie J Kaplan, Gerald Giesbrecht, Scott Shannon, Kevin McLeod

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A flexible Bayesian hierarchical model of preterm birth risk among US Hispanic subgroups in relation to maternal nativity and education

Jay S Kaufman, Richard F MacLehose, Elizabeth A Torrone, David A Savitz

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A multiplicative hazard regression model to assess the risk of disease transmission at hospital during community epidemics

Nicolas Voirin, Sylvain Roche, Philippe Vanhems, Marine Giard, Sandra David-Tchouda, Béatrice Barret, René Ecochard

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Effect of questionnaire length, personalisation and reminder type on response rate to a complex postal survey: randomised controlled trial

Shannon Sahlqvist, Yena Song, Fiona Bull, Emma Adams, John Preston, David Ogilvie, the iConnect consortium

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Cross-cultural adaptation and validation of Behçet's disease quality of life questionnaire

Zahi Touma, Lilian Ghandour, Abla Sibai, Houry Puzantian, Ayad Hamdan, Omar Hamdan, Jeanine Menassa, Imad Uthman, Thurayya Arayssi

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Developing the clinical components of a complex intervention for a glaucoma screening trial: a mixed methods study

The Glaucoma screening Platform Study group

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

The validation of the standard Chinese version of the European Organization for Research and Treatment of Cancer Quality of Life Core Questionnaire 30 (EORTC QLQ-C30) in pre-operative patients with brain tumor in China

Jin-xiang Cheng, Bo-lin Liu, Xiang Zhang, Yong-qiang Zhang, Wei Lin, Rui Wang, Yong-qin Zhang, Hong-ying Zhang, Li Xie, Jun-li Huo

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Network meta-analysis of survival data with fractional polynomials

Jeroen P Jansen

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

The use of fasting vs. non-fasting triglyceride concentration for estimating the prevalence of high LDL-cholesterol and metabolic syndrome in population surveys

Jouko Sundvall, Jaana Leiviskä, Tiina Laatikainen, Markku Peltonen, Veikko Salomaa, Mauno Vanhala, Eeva Korpi-Hyövälti, Jukka Lauronen, Georg Alfthan

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Adjusting a cancer mortality-prediction model for disease status-related eligibility criteria

Millennia Foy, Xing Chen, Marek Kimmel, Olga Y Gorlova

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Central and East European migrant men who have sex with men in London: a comparison of recruitment methods

Alison R Evans, Graham J Hart, Richard Mole, Catherine H Mercer, Violetta Parutis, Christopher J Gerry, John Imrie, Fiona M Burns

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Logistic random effects regression models: a comparison of statistical packages for binary and ordinal outcomes

Baoyue Li, Hester F Lingsma, Ewout W Steyerberg, Emmanuel Lesaffre

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Comparison of three tests of homogeneity of odds ratios in multicenter trials with unequal sample sizes within and among centers

Zahra Bagheri, Seyyed Mohammad Taghi Ayatollahi, Peyman Jafari

01.12.2011 | Debate | Ausgabe 1/2011 Open Access

Successful recruitment to trials: a phased approach to opening gates and building bridges

Sue Patterson, Hilary Mairs, Rohan Borschmann

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Calculating unreported confidence intervals for paired data

Karim F Hirji, Morten W Fagerland

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Instrumental variable meta-analysis of individual patient data: application to adjust for treatment non-compliance

Branko Miladinovic, Ambuj Kumar, Iztok Hozo, Benjamin Djulbegovic

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Unravelling the effects of age, period and cohort on metabolic syndrome components in a Taiwanese population using partial least squares regression

Yu-Kang Tu, Kuo-Liong Chien, Victoria Burley, Mark S Gilthorpe

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Alternative statistical methods for estimating efficacy of interferon beta-1b for multiple sclerosis clinical trials

Makiko N Mieno, Takuhiro Yamaguchi, Yasuo Ohashi

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Power estimation of tests in log-linear non-uniform association models for ordinal agreement

Fabien Valet, Jean-Yves Mary

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Concordance of self-reported and medical chart information on cancer diagnosis and treatment

Vinay Gupta, Kai Gu, Zhi Chen, Wei Lu, Xiao Ou Shu, Ying Zheng

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Measurement properties of translated versions of neck-specific questionnaires: a systematic review

Jasper M Schellingerhout, Martijn W Heymans, Arianne P Verhagen, Henrica C de Vet, Bart W Koes, Caroline B Terwee

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Bayesian adjustment for measurement error in continuous exposures in an individually matched case-control study

Gabriela Espino-Hernandez, Paul Gustafson, Igor Burstyn

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Use of hospitalisation history (lookback) to determine prevalence of chronic diseases: impact on modelling of risk factors for haemorrhage in pregnancy

Jian Sheng Chen, Christine L Roberts, Judy M Simpson, Jane B Ford

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Pitfalls in the statistical examination and interpretation of the correspondence between physician and patient satisfaction ratings and their relevance for shared decision making research

Oliver Hirsch, Heidemarie Keller, Christina Albohn-Kühne, Tanja Krones, Norbert Donner-Banzhoff

01.12.2011 | Technical advance | Ausgabe 1/2011 Open Access

Design of a factorial experiment with randomization restrictions to assess medical device performance on vascular tissue

Wiebke S Diestelkamp, Carissa M Krane, Margaret F Pinnell

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Using quantile regression to investigate racial disparities in medication non-adherence

Mulugeta Gebregziabher, Cheryl P Lynch, Martina Mueller, Gregory E Gilbert, Carrae Echols, Yumin Zhao, Leonard E Egede

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Measurement invariance of the center for epidemiological studies depression scale (CES-D) among chinese and dutch elderly

Baoshan Zhang, Marjolein Fokkema, Pim Cuijpers, Juan Li, Niels Smits, Aartjan Beekman

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Competing risk models to estimate the excess mortality and the first recurrent-event hazards

Aurélien Belot, Laurent Remontet, Guy Launoy, Valérie Jooste, Roch Giorgi

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Optimizing cost-efficiency in mean exposure assessment - cost functions reconsidered

Svend Erik Mathiassen, Kristian Bolin

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

The predictive value of ICD-10 diagnostic coding used to assess Charlson comorbidity index conditions in the population-based Danish National Registry of Patients

Sandra K Thygesen, Christian F Christiansen, Steffen Christensen, Timothy L Lash, Henrik T Sørensen

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A comparison of small monetary incentives to convert survey non-respondents: a randomized control trial

Joan M Griffin, Alisha Baines Simon, Erin Hulbert, John Stevenson, Joseph P Grill, Siamak Noorbaloochi, Melissa R Partin

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

How the psychosocial context of clinical trials differs from usual care: A qualitative study of acupuncture patients

Fiona Barlow, Clare Scott, Beverly Coghlan, Philippa Lee, Peter White, George T Lewith, Felicity L Bishop

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Optimizing the diagnostic power with gastric emptying scintigraphy at multiple time points

Qingjiang Hou, Zhiyue Lin, Reginald Dusing, Byron J Gajewski, Richard W McCallum, Matthew S Mayo

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Validation of the Edinburgh Claudication Questionnaire in 1st generation Black African-Caribbean and South Asian UK migrants: A sub-study to the Ethnic-Echocardiographic Heart of England Screening (E-ECHOES) study

Philip C Bennett, Gregory YH Lip, Stanley Silverman, Andrew D Blann, Paramjit S Gill

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Using e-mail recruitment and an online questionnaire to establish effect size: A worked example

Helen M Kirkby, Sue Wilson, Melanie Calvert, Heather Draper

01.12.2011 | Review | Ausgabe 1/2011 Open Access

Novel study designs to investigate the placebo response

Paul Enck, Sibylle Klosterhalfen, Stephan Zipfel

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A comparison of a new multinomial stopping rule with stopping rules of fleming and gehan in single arm phase II cancer clinical trials

John R Goffin, Greg R Pond, Dongsheng Tu

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Understanding competing risks: a simulation point of view

Arthur Allignol, Martin Schumacher, Christoph Wanner, Christiane Drechsler, Jan Beyersmann

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Baseline characteristics and patient reported outcome data of patients prescribed etanercept: web-based and telephone evaluation

Alan G Wade, Gordon M Crawford, Neil Pumford, Volker Koscielny, Susan Maycock, Alex McConnachie

01.12.2011 | Technical advance | Ausgabe 1/2011 Open Access

The Global Evidence Mapping Initiative: Scoping research in broad topic areas

Peter Bragge, Ornella Clavisi, Tari Turner, Emma Tavender, Alex Collie, Russell L Gruen

01.12.2011 | Commentary | Ausgabe 1/2011 Open Access

The case study approach

Sarah Crowe, Kathrin Cresswell, Ann Robertson, Guro Huby, Anthony Avery, Aziz Sheikh

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Additive and multiplicative hazards modeling for recurrent event data analysis

Hyun J Lim, Xu Zhang

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Stratified sampling design and loss to follow-up in survival models: evaluation of efficiency and bias

Cibele C César, Marilia S Carvalho

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Estimating and modelling cure in population-based cancer studies within the framework of flexible parametric survival models

Therese ML Andersson, Paul W Dickman, Sandra Eloranta, Paul C Lambert

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Reported frequency of physical activity in a large epidemiological study: relationship to specific activities and repeatability over time

Miranda EG Armstrong, Benjamin J Cairns, Jane Green, Gillian K Reeves, Valerie Beral, The Million Women Study Collaborators

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Revisiting the dimensional structure of the Edinburgh Postnatal Depression Scale (EPDS): empirical evidence for a general factor

Michael E Reichenheim, Claudia L Moraes, Alessandra SD Oliveira, Gustavo Lobato

01.12.2011 | Commentary | Ausgabe 1/2011 Open Access

Simulation methods to estimate design power: an overview for applied research

Benjamin F Arnold, Daniel R Hogan, John M Colford Jr, Alan E Hubbard

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Telephone and face to face methods of assessment of veteran's community reintegration yield equivalent results

Linda J Resnik, Melissa A Clark, Matthew Borgia

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Comparison of indicators of material circumstances in the context of an epidemiological study

Thomas Matukala Nkosi, Marie-Elise Parent, Jack Siemiatycki, Javier Pintos, Marie-Claude Rousseau

01.12.2011 | Commentary | Ausgabe 1/2011 Open Access

Sample size calculations for cluster randomised controlled trials with a fixed number of clusters

Karla Hemming, Alan J Girling, Alice J Sitch, Jennifer Marsh, Richard J Lilford

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A review of equity issues in quantitative studies on health inequalities: the case of asthma in adults

Heather L Greenwood, Nancy Edwards, Amandah Hoogbruin, Eulalia K Kahwa, Okeyo N Odhiambo, Jack A Buong

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Validation of the Turkish version of the Centre for Epidemiologic Studies Depression Scale (CES-D) in patients with Type 2 diabetes mellitus

Vicky Lehmann, Ceylan Makine, Çagatay Karşıdağ, Pinar Kadıoğlu, Kubilay Karşıdağ, François Pouwer

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Self-perceived quality of life predicts mortality risk better than a multi-biomarker panel, but the combination of both does best

Robin Haring, You-Shan Feng, Jörn Moock, Henry Völzke, Marcus Dörr, Matthias Nauck, Henri Wallaschofski, Thomas Kohlmann

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Advancing the argument for validity of the Alberta Context Tool with healthcare aides in residential long-term care

Carole A Estabrooks, Janet E Squires, Leslie A Hayduk, Greta G Cummings, Peter G Norton

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Imputation by the mean score should be avoided when validating a Patient Reported Outcomes questionnaire by a Rasch model in presence of informative missing data

Jean-Benoit Hardouin, Ronán Conroy, Véronique Sébille

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A self-controlled case series to assess the effectiveness of beta blockers for heart failure in reducing hospitalisations in the elderly

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

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Methodological reporting of randomized controlled trials in major hepato-gastroenterology journals in 2008 and 1998: a comparative study

Ji-Lin Wang, Tian-Tian Sun, Yan-Wei Lin, Rong Lu, Jing-Yuan Fang

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

An accurate and efficient identification of children with psychosocial problems by means of computerized adaptive testing

Antonius GC Vogels, Gert W Jacobusse, Symen A Reijneveld

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Questions asked and answered in pilot and feasibility randomized controlled trials

Milensu Shanyinde, Ruth M Pickering, Mark Weatherall

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Effort, reward and self-reported mental health: a simulation study on negative affectivity bias

Marc Arial, Pascal Wild

01.12.2011 | Study protocol | Ausgabe 1/2011 Open Access

Protocol - realist and meta-narrative evidence synthesis: Evolving Standards (RAMESES)

Trisha Greenhalgh, Geoff Wong, Gill Westhorp, Ray Pawson

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Psychometric properties and longitudinal validation of the self-reporting questionnaire (SRQ-20) in a Rwandan community setting: a validation study

Willem F Scholte, Femke Verduin, Anouk van Lammeren, Theoneste Rutayisire, Astrid M Kamperman

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Pre-validation methods for developing a patient reported outcome instrument

Maria E Prior, Jemaima Che Hamzah, Jillian J Francis, Craig R Ramsay, Mayret M Castillo, Susan E Campbell, Augusto Azuara-Blanco, Jennifer M Burr

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Validation of the Comprehensive Feeding Practices Questionnaire with parents of 10-to-12-year-olds

Elisabeth L Melbye, Torvald Øgaard, Nina C Øverby

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Multiple dimensions of health locus of control in a representative population sample: ordinal factor analysis and cross-validation of an existing three and a new four factor model

Christiane Otto, Gallus Bischof, Hans-Jürgen Rumpf, Christian Meyer, Ulfert Hapke, Ulrich John

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

The Box-Cox power transformation on nursing sensitive indicators: Does it matter if structural effects are omitted during the estimation of the transformation parameter?

Qingjiang Hou, Jonathan D Mahnken, Byron J Gajewski, Nancy Dunton

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Developing a predictive tool for psychological well-being among Chinese adolescents in the presence of missing data

Henry S Lynn, Bill Y Tsang

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Reliability of the modified child and adolescent physical activity and nutrition survey, physical activity (CAPANS-PA) questionnaire among chinese-australian youth

Claudia Strugnell, Andre Renzaho, Kate Ridley, Cate Burns

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

The reliability of assigning individuals to cognitive states using the Mini Mental-State Examination: a population-based prospective cohort study

Riccardo E Marioni, Mark Chatfield, Carol Brayne, Fiona E Matthews, Medical Research Council Cognitive Function and Ageing Study

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Using qualitative synthesis to explore heterogeneity of complex interventions

Bridget Candy, Michael King, Louise Jones, Sandy Oliver

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A questionnaire to measure melanoma risk, knowledge and protective behaviour: Assessing content validity in a convenience sample of Scots and Australians

Helen S Gillespie, Tony Watson, Jon D Emery, Amanda J Lee, Peter Murchie

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Re-evaluating a vision-related quality of life questionnaire with item response theory (IRT) and differential item functioning (DIF) analyses

Ruth MA van Nispen, Dirk L Knol, Maaike Langelaan, Ger HMB van Rens

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A randomised trial and economic evaluation of the effect of response mode on response rate, response bias, and item non-response in a survey of doctors

Anthony Scott, Sung-Hee Jeon, Catherine M Joyce, John S Humphreys, Guyonne Kalb, Julia Witt, Anne Leahy

01.12.2011 | Correspondence | Ausgabe 1/2011 Open Access

How to do a grounded theory study: a worked example of a study of dental practices

Alexandra Sbaraini, Stacy M Carter, R Wendell Evans, Anthony Blinkhorn

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Imputation of missing values of tumour stage in population-based cancer registration

Nora Eisemann, Annika Waldmann, Alexander Katalinic

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Psychometric properties of the IDS-SR30 for the assessment of depressive symptoms in spanish population

Margalida Gili, Juan V Luciano, Natalia Bauzá, Jaume Aguado, María J Serrano, Silvia Armengol, Miquel Roca

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Benefits of ICU admission in critically ill patients: Whether instrumental variable methods or propensity scores should be used

Romain Pirracchio, Charles Sprung, Didier Payen, Sylvie Chevret

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Potential risk factors associated with human encephalitis: application of canonical correlation analysis

Jemila S Hamid, Christopher Meaney, Natasha S Crowcroft, Julia Granerod, Joseph Beyene, the UK Health Protection Agency Aetiology of Encephalitis Study Group

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Reporting of loss to follow-up information in randomised controlled trials with time-to-event outcomes: a literature survey

Elke Vervölgyi, Mandy Kromp, Guido Skipka, Ralf Bender, Thomas Kaiser

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A poisson regression approach for modelling spatial autocorrelation between geographically referenced observations

Mohammadreza Mohebbi, Rory Wolfe, Damien Jolley

01.12.2011 | Study protocol | Ausgabe 1/2011 Open Access

Study protocol: the empirical investigation of methods to correct for measurement error in biobanks with dietary assessment

Derrick A Bennett, Julian Little, Lindsey F Masson, Cosetta Minelli

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Application of latent semantic analysis for open-ended responses in a large, epidemiologic study

Travis D Leleu, Isabel G Jacobson, Cynthia A LeardMann, Besa Smith, Peter W Foltz, Paul J Amoroso, Marcia A Derr, Margaret AK Ryan, Tyler C Smith, the Millennium Cohort Study Team

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Reproducibility and day time bias correction of optoelectronic leg volumetry: a prospective cohort study

Rolf P Engelberger, Claudia Blazek, Felix Amsler, Hong H Keo, Frédéric Baumann, Werner Blättler, Iris Baumgartner, Torsten Willenberg

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Improved curve fits to summary survival data: application to economic evaluation of health technologies

Martin W Hoyle, William Henley

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A proposed method to investigate reliability throughout a questionnaire

Tore Wentzel-Larsen, Tone M Norekvål, Bjørg Ulvik, Ottar Nygård, Are H Pripp

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Development of a multi-dimensional measure of resilience in adolescents: the Adolescent Resilience Questionnaire

Deirdre Gartland, Lyndal Bond, Craig A Olsson, Simone Buzwell, Susan M Sawyer

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Validity of the international physical activity questionnaire and the Singapore prospective study program physical activity questionnaire in a multiethnic urban Asian population

Ei Ei Khaing Nang, Susan Ayuko Gitau Ngunjiri, Yi Wu, Agus Salim, E Shyong Tai, Jeannette Lee, Rob M Van Dam

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Prediction of intracranial findings on CT-scans by alternative modelling techniques

Tjeerd van der Ploeg, Marion Smits, Diederik W Dippel, Myriam Hunink, Ewout W Steyerberg

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Response to written feedback of clinical data within a longitudinal study: a qualitative study exploring the ethical implications

Karen Lorimer, Cindy M Gray, Kate Hunt, Sally Wyke, Annie Anderson, Michaela Benzeval

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Estimation of current cumulative incidence of leukaemia-free patients and current leukaemia-free survival in chronic myeloid leukaemia in the era of modern pharmacotherapy

Tomáš Pavlík, Eva Janoušová, Zdeněk Pospíšil, Jan Mužík, Daniela Žáčková, Zdeněk Ráčil, Hana Klamová, Petr Cetkovský, Marek Trněný, Jiří Mayer, Ladislav Dušek

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Predicting complete loss to follow-up after a health-education program: number of absences and face-to-face contact with a researcher

MJ Park, Yoshihiko Yamazaki, Yuki Yonekura, Keiko Yukawa, Hirono Ishikawa, Takahiro Kiuchi, Joseph Green

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Validation of diabetes mellitus and hypertension diagnosis in computerized medical records in primary health care

Carmen de Burgos-Lunar, Miguel A Salinero-Fort, Juan Cárdenas-Valladolid, Sonia Soto-Díaz, Carmen Y Fuentes-Rodríguez, Juan C Abánades-Herranz, Isabel del Cura-González

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Suitability of measures of self-reported medication adherence for routine clinical use: A systematic review

Sara Garfield, Sarah Clifford, Lina Eliasson, Nick Barber, Alan Willson

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Structuring and validating a cost-effectiveness model of primary asthma prevention amongst children

G Feljandro P Ramos, Sandra Kuiper, Edward Dompeling, Antoinette DI van Asselt, Wim JC de Grauw, J André Knottnerus, Onno CP van Schayck, Tjard RJ Schermer, Johan L Severens

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

How to handle mortality when investigating length of hospital stay and time to clinical stability

Guy N Brock, Christopher Barnes, Julio A Ramirez, John Myers

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Funding and infrastructure among large-scale clinical trials examining cardiovascular diseases in Japan: evidence from a questionnaire survey

Hiroshi Sawata, Kiichiro Tsutani

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Multivariate modeling to identify patterns in clinical data: the example of chest pain

Oliver Hirsch, Stefan Bösner, Eyke Hüllermeier, Robin Senge, Krzysztof Dembczynski, Norbert Donner-Banzhoff

01.12.2011 | Correspondence | Ausgabe 1/2011 Open Access

The new COSMIN guidelines confront traditional concepts of responsiveness

Felix Angst

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Assessing smoking status in disadvantaged populations: is computer administered self report an accurate and acceptable measure?

Jamie Bryant, Billie Bonevski, Christine Paul, Christophe Lecathelinais

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

The short international physical activity questionnaire: cross-cultural adaptation, validation and reliability of the Hausa language version in Nigeria

Adewale L Oyeyemi, Adetoyeje Y Oyeyemi, Babatunde O Adegoke, Fatima O Oyetoke, Habeeb N Aliyu, Salamatu U Aliyu, Adamu A Rufai

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Mobile phones are a viable option for surveying young Australian women: a comparison of two telephone survey methods

Bette Liu, Julia ML Brotherton, David Shellard, Basil Donovan, Marion Saville, John M Kaldor

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A population study comparing screening performance of prototypes for depression and anxiety with standard scales

Helen Christensen, Philip J Batterham, Janie Busby Grant, Kathleen M Griffiths, Andrew J Mackinnon

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Positive predictive value of automated database records for diabetic ketoacidosis (DKA) in children and youth exposed to antipsychotic drugs or control medications: a tennessee medicaid study

William V Bobo, William O Cooper, Richard A Epstein Jr, Patrick G Arbogast, Jackie Mounsey, Wayne A Ray

01.12.2011 | Correspondence | Ausgabe 1/2011 Open Access

Characteristics of meta-analyses and their component studies in the Cochrane Database of Systematic Reviews: a cross-sectional, descriptive analysis

Jonathan Davey, Rebecca M Turner, Mike J Clarke, Julian PT Higgins

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Minimally important difference of the Treatment Satisfaction with Medicines Questionnaire (SATMED-Q)

Javier Rejas, Miguel A Ruiz, Antonio Pardo, Javier Soto

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Quality of reporting according to the CONSORT, STROBE and Timmer instrument at the American Burn Association (ABA) annual meetings 2000 and 2008

Karsten Knobloch, Uzung Yoon, Hans O Rennekampff, Peter M Vogt

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Integrating historical clinical and financial data for pharmacological research

Vikrant G Deshmukh, N Brett Sower, Cheri Y Hunter, Joyce A Mitchell

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Pharmacy sales data versus ward stock accounting for the surveillance of broad-spectrum antibiotic use in hospitals

Jon B Haug, Randi Myhr, Åsmund Reikvam

01.12.2011 | Review | Ausgabe 1/2011 Open Access

Selection of the appropriate method for the assessment of insulin resistance

Anwar Borai, Callum Livingstone, Ibrahim Kaddam, Gordon Ferns

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

The assessment of the quality of reporting of meta-analyses in diagnostic research: a systematic review

Brian H Willis, Muireann Quigley

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Reliability of the Marlowe-Crowne social desirability scale in Ethiopia, Kenya, Mozambique, and Uganda

Alexander Vu, Nhan Tran, Kiemanh Pham, Saifuddin Ahmed

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Stopping rules employing response rates, time to progression, and early progressive disease for phase II oncology trials

John R Goffin, Greg R Pond

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Population versus hospital controls for case-control studies on cancers in Chinese hospitals

Lin Li, Min Zhang, D'Arcy Holman

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Potential application of item-response theory to interpretation of medical codes in electronic patient records

Alex Dregan, Andy Grieve, Tjeerd van Staa, Martin C Gulliford, the eCRT Research Team

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Comparison of ICD code-based diagnosis of obesity with measured obesity in children and the implications for health care cost estimates

Stefan Kuhle, Sara FL Kirk, Arto Ohinmaa, Paul J Veugelers

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Successful strategies for high participation in three regional healthcare surveys: an observational study

Kristen R Elkins, Christopher M Nguyen, Diane S Kim, Hildy Meyers, Michele Cheung, Susan S Huang

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Concordance of sibling's recall of measures of childhood socioeconomic position

Michael M Ward

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Being a quantitative interviewer: qualitatively exploring interviewers' experiences in a longitudinal cohort study

Sarah Derrett, Sarah Colhoun

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Additive scales in degenerative disease - calculation of effect sizes and clinical judgment

Matthias W Riepe, David Wilkinson, Hans Förstl, Andreas Brieden

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Assessing genetic polymorphisms using DNA extracted from cells present in saliva samples

Zsofia Nemoda, Maria Horvat-Gordon, Christine K Fortunato, Emilie K Beltzer, Jessica L Scholl, Douglas A Granger

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Shared component modelling as an alternative to assess geographical variations in medical practice: gender inequalities in hospital admissions for chronic diseases

Berta Ibáñez-Beroiz, Julián Librero-López, Salvador Peiró-Moreno, Enrique Bernal-Delgado

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Examining the BMI-mortality relationship using fractional polynomials

Edwin S Wong, Bruce CM Wang, Louis P Garrison, Rafael Alfonso-Cristancho, David R Flum, David E Arterburn, Sean D Sullivan

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Estimating the mode of inheritance in genetic association studies of qualitative traits based on the degree of dominance index

Elias Zintzaras, Mauro Santos

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Conducting Online Expert panels: a feasibility and experimental replicability study

Dmitry Khodyakov, Susanne Hempel, Lisa Rubenstein, Paul Shekelle, Robbie Foy, Susanne Salem-Schatz, Sean O'Neill, Margie Danz, Siddhartha Dalal

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Evaluation of exposure-specific risks from two independent samples: A simulation study

William M Reichmann, David Gagnon, C Robert Horsburgh, Elena Losina

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Autism spectrum disorders and fetal hypoxia in a population-based cohort: Accounting for missing exposures via Estimation-Maximization algorithm

Igor Burstyn, Xiaoming Wang, Yutaka Yasui, Fortune Sithole, Lonnie Zwaigenbaum

01.12.2011 | Study protocol | Ausgabe 1/2011 Open Access

Cell phone-supported cognitive behavioural therapy for anxiety disorders: a protocol for effectiveness studies in frontline settings

Joakim Ekberg, Toomas Timpka, Magnus Bång, Anders Fröberg, Karin Halje, Henrik Eriksson

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Assessing methods for dealing with treatment switching in randomised controlled trials: a simulation study

James P Morden, Paul C Lambert, Nicholas Latimer, Keith R Abrams, Allan J Wailoo

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Recruitment of representative samples for low incidence cancer populations: Do registries deliver?

Tara Clinton-McHarg, Mariko Carey, Rob Sanson-Fisher, Elizabeth Tracey

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Bikeability and methodological issues using the active commuting route environment scale (ACRES) in a metropolitan setting

Lina Wahlgren, Peter Schantz

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Lifetime body size and reproductive factors: comparisons of data recorded prospectively with self reports in middle age

Benjamin J Cairns, Bette Liu, Suzanne Clennell, Rachel Cooper, Gillian K Reeves, Valerie Beral, Diana Kuh

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

"Do I really want to do this?" Longitudinal cohort study participants' perspectives on postal survey design: a qualitative study

Helen Harcombe, Sarah Derrett, Peter Herbison, David McBride

01.12.2011 | Correspondence | Ausgabe 1/2011 Open Access

Developing a Dementia Research Registry: a descriptive case study from North Thames DeNDRoN and the EVIDEM programme

Steve Iliffe, Lisa Curry, Kalpa Kharicha, Greta Rait, Jane Wilcock, David Lowery, Archana Tapuria, Dipak Kalra, Craig Ritchie

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Development of a heart failure filter for Medline: an objective approach using evidence-based clinical practice guidelines as an alternative to hand searching

Raechel A Damarell, Jennifer Tieman, Ruth M Sladek, Patricia M Davidson

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Methodology in conducting a systematic review of systematic reviews of healthcare interventions

Valerie Smith, Declan Devane, Cecily M Begley, Mike Clarke

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

A random effects variance shift model for detecting and accommodating outliers in meta-analysis

Freedom N Gumedze, Dan Jackson

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

FORM: An Australian method for formulating and grading recommendations in evidence-based clinical guidelines

Susan Hillier, Karen Grimmer-Somers, Tracy Merlin, Philippa Middleton, Janet Salisbury, Rebecca Tooher, Adele Weston

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

What about N? A methodological study of sample-size reporting in focus group studies

Benedicte Carlsen, Claire Glenton

01.12.2011 | Research article | Ausgabe 1/2011 Open Access

Uptake of newer methodological developments and the deployment of meta-analysis in diagnostic test research: a systematic review

Brian H Willis, Muireann Quigley

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