BMJ Evidence-Based Medicine (BMJ EBM) publishes original evidence-based research, insights and opinions on what matters for health care. We focus on the tools, methods, and concepts that are basic and ...

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The existing epidemiological research on long COVID has suffered from overly broad case definitions and a striking absence of control groups, which have led to distortion of risk. The unintended ...

Objectives Our objective was to develop and test prompts designed to generate balanced, evidence-based information from ...

Objectives The objective of our study was to assess the benefits and harms of tramadol vs placebo in adults with chronic pain. Design The research method was a systematic review of randomised clinical ...

Correspondence to Dr Mohammad Hassan Murad, Evidence-Based Practice Center, Mayo Clinic, Rochester, MN 55905, USA; murad.mohammad{at}mayo.edu In 1904, Dr James Herrick evaluated a 20-year-old patient ...

Correspondence to Dr Jodi Schneider, School of Information Sciences, University of Illinois Urbana-Champaign, Champaign, Illinois, USA; jschneider{at}pobox.com; jodi{at}illinois.edu The incorporation ...

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 ...

Background Musculoskeletal knee pain is a large and costly problem, and meniscal tears make up a large proportion of diagnoses. ‘Special tests’ to diagnose torn menisci are often used in the physical ...

Introduction: High-quality randomised controlled trials (RCTs) provide the most reliable evidence on the comparative efficacy of new medicines. However, non-randomised studies (NRS) are increasingly ...

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