Because of women's survival advantage, the impact of myocardial infarction
(MI) on long-term mortality in women compared with men may be underestimate
d. The authors examined this issue in a community sample of 2,462 persons a
ged greater than or equal to 65 years living in New Haven, Connecticut, who
were free of MI at baseline and were followed for 10 years (1982-1992). By
using proportional hazards models with MI hospitalizations and the sex-MI
interaction as time-dependent covariables, survival for the MI cases from t
he date of MI was compared with survival of persons who, at the same follow
-up time, were still alive and free of MI. Women survived longer than men m
ainly in the absence of MI. The multivariable-adjusted hazard ratios of dea
th were 0.53 in the absence and 0.87 in the presence of MI, and MI was asso
ciated with a greater risk of death in women (adjusted hazard ratio = 5.9)
than in men (adjusted hazard ratio = 3.6) (p = 0.01 for the sex-MI interact
ion). When out-of-hospital fatal infarctions were considered, the impact of
MI on survival in women compared with men increased. In conclusion, in thi
s elderly cohort, when viewed from a population perspective, MI had a great
er impact on mortality in women and significantly narrowed women's typical
survival advantage over men.