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 BMC Medical Research Methodology 2011, 11:132 (21 September 2011)

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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 BMC Medical Research Methodology 2011, 11:131 (21 September 2011)

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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 BMC Medical Research Methodology 2011, 11:130 (21 September 2011)

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Research article  

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

Nora Eisemann, Annika Waldmann, Alexander Katalinic BMC Medical Research Methodology 2011, 11:129 (19 September 2011)

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Correspondence  

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

Alexandra Sbaraini, Stacy M Carter, R Evans, Anthony Blinkhorn BMC Medical Research Methodology 2011, 11:128 (9 September 2011)

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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, Medical Research Council Cognitive Function and Ageing Study BMC Medical Research Methodology 2011, 11:127 (6 September 2011)

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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 BMC Medical Research Methodology 2011, 11:126 (5 September 2011)

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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 BMC Medical Research Methodology 2011, 11:125 (2 September 2011)

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