Letter: Myocardial infarction and estrogen therapy in premenopausal women
- PMID: 1264157
- DOI: 10.1056/NEJM197606032942314
Letter: Myocardial infarction and estrogen therapy in premenopausal women
Abstract
PIP: This letter was written in response to the paper by Mann et al. (British Medical Journal 2: 241-245, 1975) which reported an association between oral contraceptive (OC) use and acute myocardial infarction. Rosenberg et al. found that among 34 patients with myocardial infarction, 4 were current users of OCs and 2 used other estrogen-containing drugs. Among 1213 reference women the use was 79 and 26, respectively. The "relative risk" for OC users was 1.9 (95% confidence interval) and for other estrogen users it was 2.8 as compared with nonusers. When standardized for age these estimates became 2.2 and 2.1 and when standardized for the effects of cigarette smoking, history of hypertension, angina, and/ or diabetes the summary rate-ratio estimate for OC users decreased to 1.3 and left essentially unchanged the estimate for other estrogen users. These results are compatible with a modest increase, if any, in risk of myocardial infarction in premenopausal women associated with estrogen use, such as that reported by Mann et al.
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