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.
Stephen Sidney, Diana B. Petitti, Charles P. Quesenberry. 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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