Differences in Incidence of Stroke and Myocardial Infarction between Commercial-Industrial Areas and Agricultural-Fishery Areas in Okinawa

All cases of stroke and acute myocardial infarction (AMI) occurring between April 1, 1988 to March 31, 1991 were registered for all residents of Okinawa prefecture. There were 4756 stroke and 1059 AMI cases during the period, for a crude annual incidence rate, per 100, 000 population aged 40 years o...

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Bibliographic Details
Published inJournal of the Japanese Association for Cerebro-cardiovascular Disease Control Vol. 27; no. 3; pp. 188 - 195
Main Authors Murooka, Masako, Kinjo, Kunihiko, Kimura, Yorio, Shinzato, Yuzuru, Kawazoe, Nobuyuki, Takishita, Shuichi, Fukiyama, Koshiro
Format Journal Article
LanguageJapanese
Published The Japanese Association for Cerebro-cardiovascular Disease Control 1993
Subjects
Agricultural areas
Incidence
Industrial areas
Myocardial infarction
Okinawa
Stroke
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Summary:All cases of stroke and acute myocardial infarction (AMI) occurring between April 1, 1988 to March 31, 1991 were registered for all residents of Okinawa prefecture. There were 4756 stroke and 1059 AMI cases during the period, for a crude annual incidence rate, per 100, 000 population aged 40 years or older, of 337 for stroke and 76 for AMI. The age-adjusted annual incidence of stroke tended to be higher in agricultural-fishery areas than commercial-industrial areas. For AMI, commercial-industrial areas tended to be higher. The incidence of cerebral hemorrhage was significantly higher in the agricultural-fishery areas than in the other areas. Ratios of stroke/AMI were 4.1 in commercial-industrial areas, and 5.0 in agricultural-fishery areas. For cerebral infarction/cerebral hemorrhage, ratios were 1.6 for commercial-industrial, and 1.3 for agricultural-fishery. These results indicate an environmental variation in the incidence of stroke and AMI.
ISSN:0914-7284
DOI:10.11381/jjcdp1974.27.188