Data-dredging bias encompasses a number of more specific questionable practices (eg, fishing, p-hacking) all of which involve probing data using unplanned analyses and then reporting salient results ...

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 John Ferguson, Clinical Research Facility, National University of Ireland Galway, Galway, Ireland; john.ferguson{at}nuigalway.ie Commonly accepted statistical advice dictates that ...

Correspondence to Dr Mark H Ebell, Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, 125 Miller Hall, UGA Health Sciences Campus, Athens, GA 30602, USA; ...

Correspondence to Sir Iain Chalmers, James Lind Initiative, Summertown Pavilion, Middle Way, Oxford OX2 7LG, UK; ichalmers{at}jameslind.net We are surrounded by maelstroms of claims about the effects ...

Correspondence to Dr Veronika Williams, Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford OX2 6GG, UK; veronika.williams{at}phc.ox.ac.uk Given its scope and its place ...

Globally, drug regulators have approved statins for the prevention of cardiovascular disease (CVD), although their use in primary prevention has been controversial. A highly publicised debate has ...

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 ...

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Objectives To describe the range of collaborative approaches to shared decision-making (SDM) observed in clinical encounters of patients with diabetes and their clinicians. Design A secondary analysis ...

Objective To determine, for people seeking a date online, what activities and behaviours have an effect on the chances of converting electronic communication into a face-to-face meeting. Methods ...

Correspondence to Dr Igho J Onakpoya, Nuffield Department of Primary Care Health Sciences, University of Oxford, Centre for Evidence-Based Medicine, Oxford OX2 6GG ...