Quantifying the time-varying association between objectively measured physical activity and mortality in US older adults over a 12-year follow-up period: the NHANES 2003–2006 study ...

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

Correspondence to Dr Elaine Lehane, Catherine McAuley School of Nursing and Midwifery, University College Cork, Cork T12 K8AF, Ireland; e.lehane{at}ucc.ie To highlight and advance clinical ...

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 ...

Correspondence to Dr Zachary Munn, JBI, The University of Adelaide Faculty of Health and Medical Sciences, Adelaide, South Australia, Australia; zachary.munn{at}adelaide.edu.au We are concerned about ...

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Correspondence to Melanie Ambler, Diane Weiss Center for Orthopaedic Trauma Research, Brown University Division of Biology and Medicine, Providence, Rhode Island, USA; ...

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; ...

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 ...

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Correspondence to Dr Michael P Hengartner, Department of Applied Psychology, Zurich University of Applied Sciences, Zurich Switzerland; michaelpascal.hengartner{at}zhaw.ch Dr Adlington1 recently drew ...

Correspondence to Dr E H Morreim, Internal Medicine, The University of Tennessee Health Science Center College of Medicine Memphis, Memphis, TN 38103, USA; hmorreim{at}uthsc.edu To advance healthcare ...