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BMC Medical Research Methodology

Ausgabe 1/2011

Inhalt (176 Artikel)

Open Access Debate

One statistical test is sufficient for assessing new predictive markers

Andrew J Vickers, Angel M Cronin, Colin B Begg

Open Access Research article

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

Open Access Research article

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

Open Access Commentary

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

Philipp Dahm, Benjamin Djulbegovic

Open Access Research article

Imputation strategies for missing binary outcomes in cluster randomized trials

Jinhui Ma, Noori Akhtar-Danesh, Lisa Dolovich, Lehana Thabane

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Jeppe B Schroll, Rasmus Moustgaard, Peter C Gøtzsche

Open Access Research article

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

Sigrid Rouam, Thierry Moreau, Philippe Broët

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Clarence C Tam, Craig D Higgins, Laura C Rodrigues

Open Access Research article

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

Open Access Research article

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

Open Access Research article

The comprehensive cohort model in a pilot trial in orthopaedic trauma

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

Open Access Research article

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

Open Access Software

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

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

Open Access Research article

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

Nicola Bartolomeo, Paolo Trerotoli, Gabriella Serio

Open Access Research article

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

Open Access Research article

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

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

Open Access Research article

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

Open Access Research article

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

Morten W Fagerland, Leiv Sandvik, Petter Mowinckel

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Linn Beate Strand, Adrian G Barnett, Shilu Tong

Open Access Debate

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

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

Network meta-analysis of survival data with fractional polynomials

Jeroen P Jansen

Open Access Research article

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

Open Access Research article

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

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Debate

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

Sue Patterson, Hilary Mairs, Rohan Borschmann

Open Access Research article

Calculating unreported confidence intervals for paired data

Karim F Hirji, Morten W Fagerland

Open Access Research article

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

Branko Miladinovic, Ambuj Kumar, Iztok Hozo, Benjamin Djulbegovic

Open Access Research article

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

Makiko N Mieno, Takuhiro Yamaguchi, Yasuo Ohashi

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Gabriela Espino-Hernandez, Paul Gustafson, Igor Burstyn

Open Access Research article

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

Open Access Technical advance

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

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

Open Access Research article

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

Svend Erik Mathiassen, Kristian Bolin

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

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

Open Access Review

Novel study designs to investigate the placebo response

Paul Enck, Sibylle Klosterhalfen, Stephan Zipfel

Open Access Research article

Understanding competing risks: a simulation point of view

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

Open Access Research article

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

Open Access Technical advance

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

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

Open Access Commentary

The case study approach

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

Open Access Research article

Additive and multiplicative hazards modeling for recurrent event data analysis

Hyun J Lim, Xu Zhang

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Commentary

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

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

Open Access Research article

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

Linda J Resnik, Melissa A Clark, Matthew Borgia

Open Access Research article

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

Open Access Commentary

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

Questions asked and answered in pilot and feasibility randomized controlled trials

Milensu Shanyinde, Ruth M Pickering, Mark Weatherall

Open Access Study protocol

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

Trisha Greenhalgh, Geoff Wong, Gill Westhorp, Ray Pawson

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Elisabeth L Melbye, Torvald Øgaard, Nina C Øverby

Open Access Research article

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

Open Access Research article

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

Open Access Research article

Using qualitative synthesis to explore heterogeneity of complex interventions

Bridget Candy, Michael King, Louise Jones, Sandy Oliver

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Correspondence

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

Open Access Research article

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

Nora Eisemann, Annika Waldmann, Alexander Katalinic

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Jemila S Hamid, Christopher Meaney, Natasha S Crowcroft, Julia Granerod, Joseph Beyene

Open Access Research article

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

Open Access Research article

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

Mohammadreza Mohebbi, Rory Wolfe, Damien Jolley

Open Access Study protocol

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

A proposed method to investigate reliability throughout a questionnaire

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Jamie Bryant, Billie Bonevski, Christine Paul, Christophe Lecathelinais

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

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

Open Access Research article

Integrating historical clinical and financial data for pharmacological research

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

Open Access Review

Selection of the appropriate method for the assessment of insulin resistance

Anwar Borai, Callum Livingstone, Ibrahim Kaddam, Gordon Ferns

Open Access Research article

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

Alexander Vu, Nhan Tran, Kiemanh Pham, Saifuddin Ahmed

Open Access Research article

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

Lin Li, Min Zhang, D'Arcy Holman

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

Open Access Research article

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

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

Open Access Research article

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

Open Access Study protocol

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

Open Access Research article

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

Open Access Research article

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

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

Open Access Research article

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

Open Access Research article

"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

Open Access Correspondence

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

Open Access Research article

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

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

Open Access Research article

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

Open Access Research article

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

Benedicte Carlsen, Claire Glenton