4.6 Article

Generational and regional differences in trends of mortality from ischemic heart disease in Japan from 1969 to 1992

Journal

AMERICAN JOURNAL OF EPIDEMIOLOGY
Volume 153, Issue 12, Pages 1191-1198

Publisher

OXFORD UNIV PRESS INC
DOI: 10.1093/aje/153.12.1191

Keywords

ethnic groups; heart diseases; ischemia; mortality; myocardial ischemia; racial stocks; time factors

Funding

  1. Medical Research Council [G19/35, G8802774] Funding Source: Medline
  2. Medical Research Council [G8802774, G19/35] Funding Source: researchfish

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The authors compared generational and regional trends of premature mortality from ischemic heart disease (IHD) from 1969 to 1992 for persons aged 30-69 years. They selected Tokyo and Osaka prefectures as the most urbanized and compared them with the rest of Japan. The data were divided into two periods: period I (1969-1978, international Classification of Diseases, Eight Revision) and period 11 (1979-1992, International Classification of Diseases, Ninth Revision). In both populations, IHD mortality decreased for both sexes, but mortality from nonspecific heart disease remained constant in men and decreased in women. in Tokyo and Osaka prefectures, the percentage decline per year in IHD mortality for both sexes was significantly smaller in period II than in period I. However, in the rest of Japan, it did not decrease for either sex. Age-specific analysis showed that the percentage decline per year in period II was smallest for the group aged 30-49 years (men, 0.05%; women, 0.76%) in Tokyo and Osaka prefectures, while it was similar for all age groups in the rest of Japan. For men, the IHD mortality rate in 1991-1992 for those aged 30-49 years was higher in Tokyo and Osaka prefectures (9.4/100,000) than in the rest of Japan (5.4/100,000).

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