抄録
We describe the incidence, consciousness on arrival, circadian change of onset, prognosis, operative rate of subarachnoid hemorrhage based on an analysis of stroke registration in Iwate Prefecture, Japan, from 1991 to 1996. The crude incidence was 14.2 per hundred thousand population for men, and 23.7 for women. We further analyzed the incidence by sex and age, demonstrating higher incidence in elderly women than in elderly men. A circadian change of onset was observed obviously with higher in middle morning and in the evening, otherwise nadir at midnight and noon. The consciousness on arrival in elderly person was more severe and their prognosis was worse than younger. The case fatality rate decreased from 41.8% to 28.3%. A stroke registration is important for an analysis of onset stroke and it will be useful for stroke prevention.
