title: Why are opinions about the effects of health care so often wrong?
authors: UK Cochrane Centre, NHS Research and Development Programme.
authors: I
authors: I
authors: Chalmers
mesh_terms: D001294:Attitude to Health; D006801:Humans; D007255:Information Services / Q000592:standards*; D017410:Practice Guidelines as Topic; D011787:Quality of Health Care; D016032:Randomized Controlled Trials as Topic; D012106:Research / Q000592:standards; D016896:Treatment Outcome