Abstract
One hundred and seventy-one initial episodes of cerebral infarction (CI) occured among 1, 621 males and females of Hisayama residents aged 40 and over during the period from 1961 to 1979. Long-term prognosis of CI and recurrence after the initial episode were assessed in relation to various factors estimated at entry.
Subjects suffered from CI less frequently survived than those of general population in Hisayama twon, and ageadjusted survival rate for CI was 51% and 36% at 5 and 10 yr follow-up which was accounted approximately as two-third and a half as that for general population, respectively. Incidentally, the survival curve for CI under 70 years of age was almost equal to that for non-suffered people aged 70 and over. Among the cases with CI, a poor prognosis was associated with old age (70 y.o. and over), poor ADL at one month after initial stroke and hypertention before stroke.
Out of 154 cases with CI who survived more than one month after the intial stroke, 31 (20%) had recurrent episodes, 48% of which ocurred within two years, and 84% within five years. Anuual rate for recurrence was calculated as 5.4% on average for 5-yr follow-up period. Recurrent attacks occured somewhat frequently among those with hypertention, with atrial fibrillation on ECG in both sexes and with diabetes mellitus in males.
