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American Journal of Epidemiology Vol. 146, No. 2: 153-160
Copyright © 1997 by The Johns Hopkins University School of Hygiene and Public Health
research-article |
Long-term Prognosis of Women after Myocardial Infarction
From the SPRINT Coordinating Center, Neufeid Cardiac Research Institute, Sheba Medical Center Tel-Hashomer, Israel
Reprint requests to Michal Benderly, Neufeld Cardiac Research Institute, Sheba Medical Center, Tel-Hashomer 52621, Israel
Women sustaining myocardial infarction fare worse than men during hospitalization. Reports on long-term survival in women surviving art acute myocardial infarction are controversial. The Secondary Prevention Reinfarction Israeli Nifedipine Trial (SPRINT) registry includes 5,839 consecutive myocardial infarction patients who were hospitalized in 13 coronary care units in Israel between 1981 and 1983. The authors examined sex differences in the long-term survival of 4,808 hospital survivors (1,120 women and 3,688 men). Women exhibited a significantly poorer long-term survival than men. After age adjustment, differences between men and women decreased, leaving a survival probability difference of 11% at the end of 12 years of follow-up. In a subgroup analysis, women exhibited poorer survival than men in a comparison of patients with and without periinfarction congestive heart failure or a history of myocardial infarction preceding the index infarction. The multivariate adjusted hazard ratios associated with female sex in diabetic and nondiabetic patients were 1.46 and 1.13, respectively. In conclusion, a cumulative survival disadvantage for women in comparison with men is still evident after 12 years of follow-up. The mortality difference is diminished but not erased after age adjustment or multivariate adjustment for confounders. The authors' results are compatible with a hypothesis that the main factor underlying the increased long-term mortality in women after myocardial infarction, besides older age, is diabetes mellitus. Am J Epidemiol 1997;146:153-60.
myocardial infarction; sex; survival
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