Issue 1/2010
Content (112 Articles)
A tutorial on pilot studies: the what, why and how
Lehana Thabane, Jinhui Ma, Rong Chu, Ji Cheng, Afisi Ismaila, Lorena P Rios, Reid Robson, Marroon Thabane, Lora Giangregorio, Charles H Goldsmith
Evaluating clinical periodontal measures as surrogates for bacterial exposure: The Oral Infections and Vascular Disease Epidemiology Study (INVEST)
Ryan T Demmer, Panos N Papapanou, David R Jacobs Jr, Moïse Desvarieux
Estimates of sensitivity and specificity can be biased when reporting the results of the second test in a screening trial conducted in series
Brandy M Ringham, Todd A Alonzo, Gary K Grunwald, Deborah H Glueck
A qualitative assessment of implementing a cross-cultural survey on cancer wards in Denmark - a description of barriers
Maria Kristiansen, Amani Hassani, Allan Krasnik
Water displacement leg volumetry in clinical studies - A discussion of error sources
Eberhard Rabe, Markus Stücker, Bertram Ottillinger
Design, recruitment, and retention of African-American smokers in a pharmacokinetic study
Babalola Faseru, Lisa S Cox, Carrie A Bronars, Isaac Opole, Gregory A Reed, Matthew S Mayo, Jasjit S Ahluwalia, Kolawole S Okuyemi
Comparison of techniques for handling missing covariate data within prognostic modelling studies: a simulation study
Andrea Marshall, Douglas G Altman, Patrick Royston, Roger L Holder
Retaining young people in a longitudinal sexual health survey: a trial of strategies to maintain participation
Marion Henderson, Daniel Wight, Catherine Nixon, Graham Hart
Primary Prevention from the Epidemiology Perspective: Three Examples from the Practice
Iris Pigeot, Stefaan De Henauw, Ronja Foraita, Ingeborg Jahn, Wolfgang Ahrens
Association between framing of the research question using the PICOT format and reporting quality of randomized controlled trials
Lorena P Rios, Chenglin Ye, Lehana Thabane
The Manchester Color Wheel: development of a novel way of identifying color choice and its validation in healthy, anxious and depressed individuals
Helen R Carruthers, Julie Morris, Nicholas Tarrier, Peter J Whorwell
Cross-cultural adaptation of research instruments: language, setting, time and statistical considerations
Linn Gjersing, John RM Caplehorn, Thomas Clausen
Understanding human functioning using graphical models
Markus Kalisch, Bernd AG Fellinghauer, Eva Grill, Marloes H Maathuis, Ulrich Mansmann, Peter Bühlmann, Gerold Stucki
Electronic search strategies to identify reports of cluster randomized trials in MEDLINE: low precision will improve with adherence to reporting standards
Monica Taljaard, Jessie McGowan, Jeremy M Grimshaw, Jamie C Brehaut, Andrew McRae, Martin P Eccles, Allan Donner
Performance of mixed effects models in the analysis of mediated longitudinal data
Emily A Blood, Howard Cabral, Timothy Heeren, Debbie M Cheng
Recruiting older people to a randomised controlled dietary intervention trial - how hard can it be?
Sarah E Forster, Laura Jones, John M Saxton, Daniel J Flower, Gemma Foulds, Hilary J Powers, Stuart G Parker, A Graham Pockley, Elizabeth A Williams
Relationship between haemagglutination-inhibiting antibody titres and clinical protection against influenza: development and application of a bayesian random-effects model
Laurent Coudeville, Fabrice Bailleux, Benjamin Riche, Françoise Megas, Philippe Andre, René Ecochard
Adaptive regression modeling of biomarkers of potential harm in a population of U.S. adult cigarette smokers and nonsmokers
John H Warner, Qiwei Liang, Mohamadi Sarkar, Paul E Mendes, Hans J Roethig
Variables with time-varying effects and the Cox model: Some statistical concepts illustrated with a prognostic factor study in breast cancer
Carine A Bellera, Gaëtan MacGrogan, Marc Debled, Christine Tunon de Lara, Véronique Brouste, Simone Mathoulin-Pélissier
The COSMIN checklist for evaluating the methodological quality of studies on measurement properties: A clarification of its content
Lidwine B Mokkink, Caroline B Terwee, Dirk L Knol, Paul W Stratford, Jordi Alonso, Donald L Patrick, Lex M Bouter, Henrica CW de Vet
Can we rely on the best trial? A comparison of individual trials and systematic reviews
Paul P Glasziou, Sasha Shepperd, Jon Brassey
Methodological issues regarding power of classical test theory (CTT) and item response theory (IRT)-based approaches for the comparison of patient-reported outcomes in two groups of patients - a simulation study
Véronique Sébille, Jean-Benoit Hardouin, Tanguy Le Néel, Gildas Kubis, François Boyer, Francis Guillemin, Bruno Falissard
Design of a randomized trial to evaluate the influence of mobile phone reminders on adherence to first line antiretroviral treatment in South India - the HIVIND study protocol
Ayesha De Costa, Anita Shet, Nagalingeswaran Kumarasamy, Per Ashorn, Bo Eriksson, Lennart Bogg, Vinod K Diwan
Investigation of relative risk estimates from studies of the same population with contrasting response rates and designs
Nicole M Mealing, Emily Banks, Louisa R Jorm, David G Steel, Mark S Clements, Kris D Rogers
Semi-parametric risk prediction models for recurrent cardiovascular events in the LIPID study
Jisheng Cui, Andrew Forbes, Adrienne Kirby, Ian Marschner, John Simes, David Hunt, Malcolm West, Andrew Tonkin
A graphical vector autoregressive modelling approach to the analysis of electronic diary data
Beate Wild, Michael Eichler, Hans-Christoph Friederich, Mechthild Hartmann, Stephan Zipfel, Wolfgang Herzog
The Jamaica asthma and allergies national prevalence survey: rationale and methods
Eulalia K Kahwa, Novie O Younger, Yvonne B Wint, Norman K Waldron, Hermi H Hewitt, Jennifer M Knight-Madden, Kay A Bailey, Nancy C Edwards, Laurel R Talabere, Karen N Lewis-Bell
Quality of cause-of-death reporting using ICD-10 drowning codes: a descriptive study of 69 countries
Tsung-Hsueh Lu, Philippe Lunetta, Sue Walker
The Total Deviation Index estimated by Tolerance Intervals to evaluate the concordance of measurement devices
Geòrgia Escaramís, Carlos Ascaso, Josep L Carrasco
Global quantitative indices reflecting provider process-of-care: data-base derivation
John L Moran, Patricia J Solomon
Practical application of cure mixture model for long-term censored survivor data from a withdrawal clinical trial of patients with major depressive disorder
Ichiro Arano, Tomoyuki Sugimoto, Toshimitsu Hamasaki, Yuko Ohno
Missing the forest (plot) for the trees? A critique of the systematic review in tobacco control
Laura J Rosen, Michal Ben Noach, Elliot Rosenberg
Recruitment methods in Alzheimer's disease research: general practice versus population based screening by mail
Fred Andersen, Torgeir A Engstad, Bjørn Straume, Matti Viitanen, Dag S Halvorsen, Samuel Hykkerud, Kjell Sjøbrend
Mental health in the aged: prevalence, covariates and related neuroendocrine, cardiovascular and inflammatory factors of successful aging
Maria E Lacruz, Rebecca T Emeny, Horst Bickel, Barbara Cramer, Alexander Kurz, Martin Bidlingmaier, Dorothea Huber, Günther Klug, Annette Peters, Karl H Ladwig
Latent variables and structural equation models for longitudinal relationships: an illustration in nutritional epidemiology
Michel Chavance, Sylvie Escolano, Monique Romon, Arnaud Basdevant, Blandine de Lauzon-Guillain, Marie Aline Charles
Trials within trials? Researcher, funder and ethical perspectives on the practicality and acceptability of nesting trials of recruitment methods in existing primary care trials
Jonathan Graffy, Peter Bower, Elaine Ward, Paul Wallace, Brendan Delaney, Ann-Louise Kinmonth, David Collier, Julia Miller
Methods for determining disease burden and calibrating national surveillance data in the United Kingdom: the second study of infectious intestinal disease in the community (IID2 study)
Sarah J O'Brien, Greta Rait, Paul R Hunter, James J Gray, Frederick J Bolton, David S Tompkins, Jim McLauchlin, Louise H Letley, Goutam K Adak, John M Cowden, Meirion R Evans, Keith R Neal, Gillian E Smith, Brian Smyth, Clarence C Tam, Laura C Rodrigues
Parametric frailty models for clustered data with arbitrary censoring: application to effect of male circumcision on HPV clearance
Xiangrong Kong, Kellie J Archer, Lawrence H Moulton, Ronald H Gray, Mei-Cheng Wang
Protocol for a mixed methods study investigating the impact of investment in housing, regeneration and neighbourhood renewal on the health and wellbeing of residents: the GoWell programme
Matt Egan, Ade Kearns, Phil Mason, Carol Tannahill, Lyndal Bond, Jennie Coyle, Sheila Beck, Fiona Crawford, Phil Hanlon, Louise Lawson, Jennifer McLean, Mark Petticrew, Elena Sautkina, Hilary Thomson, David Walsh
Surname lists to identify South Asian and Chinese ethnicity from secondary data in Ontario, Canada: a validation study
Baiju R Shah, Maria Chiu, Shubarna Amin, Meera Ramani, Sharon Sadry, Jack V Tu
Subgroup effects despite homogeneous heterogeneity test results
Rolf HH Groenwold, Maroeska M Rovers, Jacobus Lubsen, Geert JMG van der Heijden
The null hypothesis significance test in health sciences research (1995-2006): statistical analysis and interpretation
Luis Carlos Silva-Ayçaguer, Patricio Suárez-Gil, Ana Fernández-Somoano
The 12-item World Health Organization Disability Assessment Schedule II (WHO-DAS II): a nonparametric item response analysis
Juan V Luciano, José L Ayuso-Mateos, Jaume Aguado, Ana Fernandez, Antoni Serrano-Blanco, Miquel Roca, Josep M Haro
Measurement of nicotine withdrawal symptoms: linguistic validation of the Wisconsin Smoking Withdrawal Scale (WSWS) in Malay
Ahmed Awaisu, Sulastri Samsudin, Nur A Amir, Che G Omar, Mohd I Hashim, Mohamed H Nik Mohamad, Asrul A Shafie, Mohamed A Hassali
Effectiveness of strategies to increase the validity of findings from association studies: size vs. replication
Rolf Weitkunat, Etienne Kaelin, Grégory Vuillaume, Gerd Kallischnigg
A simulation study for comparing testing statistics in response-adaptive randomization
Xuemin Gu, J Jack Lee
Testing for heterogeneity among the components of a binary composite outcome in a clinical trial
Janice Pogue, Lehana Thabane, PJ Devereaux, Salim Yusuf
Shortening a survey and using alternative forms of prenotification: Impact on response rate and quality
Timothy J Beebe, Enrique Rey, Jeanette Y Ziegenfuss, Sarah Jenkins, Kandace Lackore, Nicholas J Talley, Richard G Locke III
Pan-Canadian assessment of pandemic immunization data collection: study methodology
Jennifer A Pereira, Susan Quach, Christine Heidebrecht, Julie Foisy, Sherman Quan, Michael Finkelstein, Christopher A Sikora, Julie A Bettinger, David L Buckeridge, Anne McCarthy, Shelley Deeks, Jeffrey C Kwong
Testing survey methodology to measure patients' experiences and views of the emergency and urgent care system: telephone versus postal survey
Alicia O'Cathain, Emma Knowles, Jon Nicholl
Systematic reviews, systematic error and the acquisition of clinical knowledge
Steffen Mickenautsch
Network meta-analysis on the log-hazard scale, combining count and hazard ratio statistics accounting for multi-arm trials: A tutorial
Beth S Woods, Neil Hawkins, David A Scott
A probit- log- skew-normal mixture model for repeated measures data with excess zeros, with application to a cohort study of paediatric respiratory symptoms
Sadia Mahmud, WY Wendy Lou, Neil W Johnston
Successful Reach and Adoption of a workplace health promotion RCT targeting a group of high-risk workers
Marie B Jørgensen, Charlotte DN Rasmussen, Dorte Ekner, Karen Søgaard
Development and validation of self-reported line drawings for assessment of knee malalignment and foot rotation: a cross-sectional comparative study
Sarah L Ingham, Amanda Moody, Abhishek Abhishek, Sally A Doherty, Weiya Zhang, Michael Doherty
Analysis of an ordinal outcome in a multicentric randomized controlled trial: application to a 3- arm anti- malarial drug trial in Cameroon
Solange Youdom Whegang, Leonardo K Basco, Henri Gwét, Jean-Christophe Thalabard
Dichotomization: 2 × 2 (×2 × 2 × 2...) categories: infinite possibilities
Karyn K Heavner, Carl V Phillips, Igor Burstyn, Warren Hare
A Spoonful of Math Helps the Medicine Go Down: An Illustration of How Healthcare can Benefit from Mathematical Modeling and Analysis
E Michael Foster, Michael R Hosking, Serhan Ziya
Building capacity for evidence generation, synthesis and implementation to improve the care of mothers and babies in South East Asia: methods and design of the SEA-ORCHID Project using a logical framework approach
Steve McDonald, Tari Turner, Catherine Chamberlain, Pisake Lumbiganon, Jadsada Thinkhamrop, Mario R Festin, Jacqueline J Ho, Hakimi Mohammad, David J Henderson-Smart, Jacki Short, Caroline A Crowther, Ruth Martis, Sally Green
Research methods for subgrouping low back pain
Peter Kent, Jennifer L Keating, Charlotte Leboeuf-Yde
A systematic review of models to predict recruitment to multicentre clinical trials
Katharine D Barnard, Louise Dent, Andrew Cook
The importance of adjusting for potential confounders in Bayesian hierarchical models synthesising evidence from randomised and non-randomised studies: an application comparing treatments for abdominal aortic aneurysms
C Elizabeth McCarron, Eleanor M Pullenayegum, Lehana Thabane, Ron Goeree, Jean-Eric Tarride
Response rates to a mailed survey of a representative sample of cancer patients randomly drawn from the Pennsylvania Cancer Registry: a randomized trial of incentive and length effects
Bridget J Kelly, Taressa K Fraze, Robert C Hornik
Measures and models for causal inference in cross-sectional studies: arguments for the appropriateness of the prevalence odds ratio and related logistic regression
Michael E Reichenheim, Evandro SF Coutinho
What is a pilot or feasibility study? A review of current practice and editorial policy
Mubashir Arain, Michael J Campbell, Cindy L Cooper, Gillian A Lancaster
A life-course and time perspective on the construct validity of psychological distress in women and men. Measurement invariance of the K6 across gender
Aline Drapeau, Dominic Beaulieu-Prévost, Alain Marchand, Richard Boyer, Michel Préville, Sylvia Kairouz
Joint modeling of multivariate longitudinal data and the dropout process in a competing risk setting: application to ICU data
Emmanuelle Deslandes, Sylvie Chevret
Automatic de-identification of textual documents in the electronic health record: a review of recent research
Stephane M Meystre, F Jeffrey Friedlin, Brett R South, Shuying Shen, Matthew H Samore
The impact of attrition on the representativeness of cohort studies of older people
Samuel L Brilleman, Nancy A Pachana, Annette J Dobson
Using Abbreviated Injury Scale (AIS) codes to classify Computed Tomography (CT) features in the Marshall System
Mehdi M Lesko, Maralyn Woodford, Laura White, Sarah J O'Brien, Charmaine Childs, Fiona E Lecky
Test-retest reliability of selected items of Health Behaviour in School-aged Children (HBSC) survey questionnaire in Beijing, China
Yang Liu, Mei Wang, Jorma Tynjälä, Yan Lv, Jari Villberg, Zhouyang Zhang, Lasse Kannas
Do differences in the administrative structure of populations confound comparisons of geographic health inequalities?
Andrew L Jackson, Carolyn A Davies, Alastair H Leyland
Determining the interviewer effect on CQ Index outcomes: a multilevel approach
Sjenny Winters, Mathilde H Strating, Niek S Klazinga, Rudolf B Kool, Robbert Huijsman
Identifying nurse staffing research in Medline: development and testing of empirically derived search strategies with the PubMed interface
Michael Simon, Elke Hausner, Susan F Klaus, Nancy E Dunton
Sampling and coverage issues of telephone surveys used for collecting health information in Australia: results from a face-to-face survey from 1999 to 2008
Eleonora Dal Grande, Anne W Taylor
Interpretation of evidence in data by untrained medical students: a scenario-based study
Thomas V Perneger, Delphine S Courvoisier
Multiple imputation for estimation of an occurrence rate in cohorts with attrition and discrete follow-up time points: a simulation study
Noémie Soullier, Elise de La Rochebrochard, Jean Bouyer
Comparison of participants and non-participants to the ORISCAV-LUX population-based study on cardiovascular risk factors in Luxembourg
Ala'a Alkerwi, Nicolas Sauvageot, Sophie Couffignal, Adelin Albert, Marie-Lise Lair, Michèle Guillaume
The search for stable prognostic models in multiple imputed data sets
David Vergouw, Martijn W Heymans, George M Peat, Ton Kuijpers, Peter R Croft, Henrica CW de Vet, Henriëtte E van der Horst, Daniëlle AWM van der Windt
Inter-rater agreement and reliability of the COSMIN (COnsensus-based Standards for the selection of health status Measurement Instruments) Checklist
Lidwine B Mokkink, Caroline B Terwee, Elizabeth Gibbons, Paul W Stratford, Jordi Alonso, Donald L Patrick, Dirk L Knol, Lex M Bouter, Henrica CW de Vet
The effect of survey method on survey participation: Analysis of data from the Health Survey for England 2006 and the Boost Survey for London
Jennifer S Mindell, Sarah Tipping, Kevin Pickering, Steven Hope, Marilyn A Roth, Bob Erens
The effect of mode and context on survey results: Analysis of data from the Health Survey for England 2006 and the Boost Survey for London
Sarah Tipping, Steven Hope, Kevin Pickering, Bob Erens, Marilyn A Roth, Jennifer S Mindell
IMproving PArticipation of patients in Clinical Trials - rationale and design of IMPACT
Katrien Oude Rengerink, Brent C Opmeer, Sabine LM Logtenberg, Lotty Hooft, Kitty WM Bloemenkamp, Monique C Haak, Martijn A Oudijk, Marc E Spaanderman, Johannes J Duvekot, Christine Willekes, Maria G van Pampus, Martina M Porath, Jim van Eyck, Marko J Sikkema, Ben Willem J Mol
Prediction of two month modified Rankin Scale with an ordinal prediction model in patients with aneurysmal subarachnoid haemorrhage
Roelof Risselada, Hester F Lingsma, Andrew J Molyneux, Richard SC Kerr, Julia Yarnold, Mary Sneade, Ewout W Steyerberg, Miriam CJM Sturkenboom
A survey of variable selection methods in two Chinese epidemiology journals
Huimin Liao, Henry S Lynn
Recruitment and retention of women in a large randomized control trial to reduce repeat preterm births: the Philadelphia Collaborative Preterm Prevention Project
David A Webb, James C Coyne, Robert L Goldenberg, Vijaya K Hogan, Irma T Elo, Joan R Bloch, Leny Mathew, Ian M Bennett, Erika F Dennis, Jennifer F Culhane
Evidence at a glance: error matrix approach for overviewing available evidence
Frederik Keus, Jørn Wetterslev, Christian Gluud, Cornelis JHM van Laarhoven
"Summary Page": a novel tool that reduces omitted data in research databases
Saveli I Goldberg, Andrzej Niemierko, Maria Shubina, Alexander Turchin
Standard values and relationship-specific validity of the Bielefeld Relationship Expectations Questionnaire (BFPE)
Katja Petrowski, Hendrik Berth, Sören Paul, Gesine Grande, Yve Stöbel-Richter, Elmar Brähler
What differences are detected by superiority trials or ruled out by noninferiority trials? A cross-sectional study on a random sample of two-hundred two-arms parallel group randomized clinical trials
Angèle Gayet-Ageron, Thomas Agoritsas, Christophe Combescure, Krisztina Bagamery, Delphine S Courvoisier, Thomas V Perneger
Exploratory factor analysis of self-reported symptoms in a large, population-based military cohort
Molly L Kelton, Cynthia A LeardMann, Besa Smith, Edward J Boyko, Tomoko I Hooper, Gary D Gackstetter, Paul D Bliese, Charles W Hoge, Tyler C Smith
Domains of disgust sensitivity: revisited factor structure of the questionnaire for the assessment of disgust sensitivity (QADS) in a cross-sectional, representative german survey
Katja Petrowski, Sören Paul, Gabriele Schmutzer, Marcus Roth, Elmar Brähler, Cornelia Albani
Polytomous diagnosis of ovarian tumors as benign, borderline, primary invasive or metastatic: development and validation of standard and kernel-based risk prediction models
Ben Van Calster, Lil Valentin, Caroline Van Holsbeke, Antonia C Testa, Tom Bourne, Sabine Van Huffel, Dirk Timmerman
Methods of competing risks analysis of end-stage renal disease and mortality among people with diabetes
Hyun J Lim, Xu Zhang, Roland Dyck, Nathaniel Osgood
Design and conduct of Caudwell Xtreme Everest: an observational cohort study of variation in human adaptation to progressive environmental hypoxia
Denny ZH Levett, Daniel S Martin, Mark H Wilson, Kay Mitchell, Sundeep Dhillon, Fabio Rigat, Hugh E Montgomery, Monty G Mythen, Michael PW Grocott
Assessing nonresponse bias at follow-up in a large prospective cohort of relatively young and mobile military service members
Alyson J Littman, Edward J Boyko, Isabel G Jacobson, Jaime Horton, Gary D Gackstetter, Besa Smith, Tomoko Hooper, Timothy S Wells, Paul J Amoroso, Tyler C Smith
New directions in childhood obesity research: how a comprehensive biorepository will allow better prediction of outcomes
Matthew A Sabin, Susan L Clemens, Richard Saffery, Zoe McCallum, Michele W Campbell, Wieland Kiess, Nancy A Crimmins, Jessica G Woo, Gary M Leong, George A Werther, Obioha C Ukoumunne, Melissa A Wake
Balancing high accrual and ethical recruitment in paediatric oncology: a qualitative study of the 'look and feel' of clinical trial discussions
Lucie MT Byrne-Davis, Peter Salmon, Katja Gravenhorst, Tim OB Eden, Bridget Young
Reliability of anthropometric measures in a longitudinal cohort of patients initiating ART in West Africa
Maryline Sicotte, Marielle Ledoux, Maria-Victoria Zunzunegui, Souleymane Ag Aboubacrine, Vinh-Kim Nguyen
Categorisation of continuous exposure variables revisited. A response to the Hyperglycaemia and Adverse Pregnancy Outcome (HAPO) Study
Kathrine F Frøslie, Jo Røislien, Petter Laake, Tore Henriksen, Elisabeth Qvigstad, Marit B Veierød
Development and psychometric properties of a belief-based Physical Activity Questionnaire for Diabetic Patients (PAQ-DP)
Zeinab Ghazanfari, Shamsaddin Niknami, Fazlollah Ghofranipour, Ebrahim Hajizadeh, Ali Montazeri
What are the basic self-monitoring components for cardiovascular risk management?
Alison M Ward, Carl Heneghan, Rafael Perera, Dan Lasserson, David Nunan, David Mant, Paul Glasziou
Objectively-assessed outcome measures: a translation and cross-cultural adaptation procedure applied to the Chedoke McMaster Arm and Hand Activity Inventory (CAHAI)
Corina Schuster, Sabine Hahn, Thierry Ettlin
A methodology to establish a database to study gene environment interactions for childhood asthma
Stephen W Turner, Jon G Ayres, Tatiana V Macfarlane, Anil Mehta, Gita Mehta, Colin N Palmer, Steve Cunningham, Tim Adams, Krishnan Aniruddhan, Claire Bell, Donna Corrigan, Jason Cunningham, Andrew Duncan, Gerard Hunt, Richard Leece, Una MacFadyen, Jonathan McCormick, Sally McLeish, Andrew Mitra, Deborah Miller, Elizabeth Waxman, Alan Webb, Slawomir Wojcik, Somnath Mukhopadhyay, Donald Macgregor
Model selection in Medical Research: A simulation study comparing Bayesian Model Averaging and Stepwise Regression
Anna Genell, Szilard Nemes, Gunnar Steineck, Paul W Dickman
Barriers and facilitators to recruitment of physicians and practices for primary care health services research at one centre
Sharon Johnston, Clare Liddy, William Hogg, Melissa Donskov, Grant Russell, Elizabeth Gyorfi-Dyke
Involving users in the design of a randomised controlled trial of an intervention to promote early presentation in breast cancer: qualitative study
Lindsay JL Forbes, Carol McNaughton Nicholls, Louise Linsell, Jenny Graham, Charlotte Tompkins, Amanda J Ramirez
Under-ascertainment of Aboriginality in records of cardiovascular disease in hospital morbidity and mortality data in Western Australia: a record linkage study
Tom G Briffa, Frank M Sanfilippo, Michael ST Hobbs, Stephen C Ridout, Judy M Katzenellenbogen, Peter L Thompson, Sandra C Thompson
Comparison of imputation methods for handling missing covariate data when fitting a Cox proportional hazards model: a resampling study
Andrea Marshall, Douglas G Altman, Roger L Holder