Correspondence to Dr Kerry Dwan, Centre for Reviews and Dissemination, University of York, York, UK; Kerry.dwan{at}york.ac.uk A systematic review identifies, appraises and synthesises all the ...

Correspondence to Dr Hendrika J Luijendijk, General Practice and Elderly Care Medicine, University Medical Centre Groningen, Groningen 9713 GZ, The Netherlands; h.j.luijendijk{at}umcg.nl PICOs are ...

Correspondence to Dr Jeffrey K Aronson, Centre for Evidence-Based Medicine, Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford OX2 6GG ...

Associate Editor, Evidence Based Medicine, Department of Family Medicine, University of Alberta, Canada Correspondence to Denise Campbell-Scherer Associate Professor, Department of Family Medicine, ...

Objectives To examine the association between regulatory reviewer disagreements and postmarket safety actions among novel therapeutics approved by the US Food and Drug Administration (FDA) between ...

Drug treatment to reduce cholesterol to new target levels is now recommended in four moderate- to high-risk patient populations: patients who have already sustained a cardiovascular event, adult ...

Survival analysis is routinely used to assess differences between groups in relapse prevention and treatment discontinuation studies involving people with long-term psychiatric conditions. The actual ...

Correspondence to Professor John Brodersen, Centre of Research & Education in General Practice, Department of Public Health, University of Copenhagen, Faculty of Health Sciences, Copenhagen 1014, ...

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be ...

A network meta-analysis combines the evidence from existing randomised trials about the comparative efficacy of multiple treatments. It allows direct and indirect evidence about each comparison to be ...

Correspondence to Dr Gillian Stokes, Social Research Institute, EPPI Centre, University College London, London, WC1H 0NS, UK; gillian.stokes{at}ucl.ac.uk Searches conducted a year or more before ...

Correspondence to Professor Carl Heneghan, Primary Care Health Sciences, University of Oxford, Oxford OX1 2JD, UK; carl.heneghan{at}phc.ox.ac.uk If you wish to reuse ...