Methodological gloss won’t fix a rubbish evidence base

Information on the effectiveness and safety of healthcare should be valid, precise, up to date, clear, and freely available. Currently none of these criteria are fully satisfied, and Cochrane systematic reviews are not the solution. Ian Roberts, co-director of the clinical trials unit at the London School of Hygiene and Tropical Medicine, joins us to describe what the Cochrane Injuries Group is doing to address some of these problems. Read the full analysis article: http://www.bmj.com/content/350/bmj.h2463