Safe current limits for electromedical equipment and hazards to patients.

clinical diagnosis of definite angina. The women with angina in our study were, on average, 64 years old; they had definite angina determined by two independent, standardized, physician-administered medical histories, which were subsequently reviewed and adjudicated by a panel of three physicians. Although the number of women with angina in our study who actually had coronary disease cannot be determined with certainty, estimation of prevalence and event rates by removal of half the women with angina would be inaccurate. We wholeheartedly agree with Dr Horton that the prognosis in women with angina is not benign. We stated in our article that "women with angina have five times the risk for a subsequent coronary event (coronary insufficiency, myocardial infarction, or coronary death) when compared with women free of chest discomfort symptoms, a risk gradient just as high as that observed for men with angina."3 The need is clear for further data on cardiovascular disease in women that is derived from a database that can confirm clinically suspect cases of coronary disease.