ebm.bmj

How methodological pitfalls have created widespread misunderstanding about long COVID

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 ...
ebm.bmj

Diet–heart disease hypothesis is unaffected by results of analysis of recovered data from Minnesota Coronary Experiment

Correspondence to: Professor Murray Skeaff, Department of Human Nutrition, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand; murray.skeaff{at}otago.ac.nz If you wish to reuse any or all of ...
ebm.bmj

Estimates of the minimal important difference to evaluate the clinical significance of antidepressants in the acute treatment of moderate-to-severe depression

The efficacy of antidepressants in the acute treatment of moderate-to-severe depression remains a controversial issue. The minimal important difference (MID) is relevant to judge the clinical ...
ebm.bmj

Using Risk of Bias 2 to assess results from randomised controlled trials: guidance from Cochrane

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 ...