Stephen Sidney, MD; Diana B. Petitti, MD; Charles P. Quesenberry Jr., PhD
To estimate the relative risk for incident acute myocardial infarction in relation to the current use of estrogen and estrogen-progestogen.
Retrospective case–control study.
Medical centers of a large prepaid health care program, the kaiser Permanente Medical Care Program (KPMCP), Northern California region.
All women hospitalized at a KPMCP center for incident acute myocardial infarction during a 3-year period from 1991 to 1994. Controls were matched to case-patients for year of birth and KPMCP facility and were selected at random from among all female members of the KPMCP.
An in-person interview that included questions about current and lifetime use of estrogen and estrogen-progestogen; known cardiovascular risk factors; and other medical, sociodemographic, and behavioral factors that might affect risk for myocardial infarction.
Odds ratios for myocardial infarction associated with use of estrogen and estrogen-progestogen.
The odds ratio for myocardial infarction in current users of estrogen or estrogen-progestogen compared with women who had never used these agents was 0.96 (95% CI, 0.66 to 1.40) after adjustment for confounders. The odds ratio for myocardial infarction in past users of estrogen or estrogen-progestogen was 1.07 (CI, 0.72 to 1.58). Duration of hormone use was unrelated to the odds ratio for myocardial infarction.
This study did not show a statistically significant decrease in the odds ratio for myocardial infarction associated with current use of estrogen or estrogen-progestogen. It neither confirms nor refutes the hypothesis that hormone use prevents myocardial infarction in postmenopausal women.
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Sidney S, Petitti DB, Quesenberry CP. Myocardial Infarction and the Use of Estrogen and Estrogen-Progestogen in Postmenopausal Women. Ann Intern Med. 1997;127:501–508. doi: 10.7326/0003-4819-127-7-199710010-00001
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Published: Ann Intern Med. 1997;127(7):501-508.
Acute Coronary Syndromes, Cardiology, Coronary Heart Disease, Emergency Medicine.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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