PMID: 9558654Apr 29, 1998Paper

Subarachnoid hemorrhage in 'Vital Statistics of Japan', 1993-1995: variability with age and sex

No shinkei geka. Neurological surgery
M Noguchi

Abstract

The incidence and death rate of subarachnoid hemorrhage (SAH) varies with age and sex. Female preponderance in the incidence of SAH is a well-known fact. However, the degree varies with age. Autopsy data, records of natural history of unruptured aneurysms, epidemiological and clinical cooperative studies have provided a great amount of information regarding the statistics of subarachnoid hemorrhage. But, each individual study has its own limitation, such as a bias in case selection in autopsy or clinical studies, predominance of aged population in the epidemiological cohort studies, limited frequency in the detection of unruptured aneurysms in the entire population. These shortcomings are reflected in the variability in the statistical data of these studies. Death records in 'Vital Statistics of Japan', published annually by Ministry of Health and Welfare of Japan, exhibit the numbers of deaths by cause (according to ICD-9 or 10 code), sex and age. In this study, we calculated the death rates of SAH (per 100,000) in 1993-1995 for each age group of both sexes based on the published data. Deaths from breast cancers and automobile accidents (AMA) were assessed in the same manner and compared with the results of SAH. The annual dea...Continue Reading

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