Studies in meta-analysis of treatment of stable angina had methodological flaws

EDITOR—Bucher et al's meta-analysis of the treatment of stable angina with percutaneous transluminal coronary angioplasty or medical treatment is based on a small number of trials with methodological flaws. 1 2 The conclusions could have considerable adverse effects on the provision of revascularisation services, and we wish to draw attention to problems with the meta-analysis. Its results should not be used to guide clinical practice or decision making in public health. Sievers et al recruited asymptomatic patients to randomisation between angioplasty and medical …