わが国における寿命と年令層別健康度の地域差とその推移

概要

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In Japan, prefecture life tables were published 11 times by Mizushima and his colleagues since 1921-25. With those life tables geographic variations of longevity and healthiness by age group and their chronological changes in the past fifty years, from 1921-25 to 1974-76, were studied. In 1921-25, the longest longevities were observed for the prefectures in Kyushu and Shikoku districts followed by those in Chugoku and Tokai districts and the shortest in Hokuriku followed by Metropolitan and Tohoku districts. The difference between the longest and the shortest amounted 15 years, 25% of the longest, showing considerably large difference. With modernization of the country, longevity was markedly improved in every prefecture and national equalization of longevity was set forward. In Metropolitan and Hokuriku districts longevity was improved markedly and jumped up to the top most positions in 1974-76 from the bottom in 1921-25. In Kyushu and Shikoku districts which were in the most prominent position in 1921-25 improvement of longevity was poor and they fell down to the inferior positions next to Tohoku district in 1974-76. On the other hand, Tokai and Chugoku districts have kept their dominant positions through the past 50 years and Tohoku district has remained inferior. As a result of those changes, geographical distribution of longevity was much changed and a correlation of the distribution between 1921-25 and 1974-76 became negative, r=-0.1811. In 1974-76, longer longevities were, in general, observed in the socioeconomically developed areas such as Metropolitan districts and industrialized belt along the Pacific Ocean and shorter longevities in the less developed areas remote from the center of the country, while in 1921-25 natural environment appeared to have had stronger relations with the longevity. Geographic variations of healthiness for each age group and influences of mortality by age group, main causes of death, and level of income were also studied.
日本人口学会の論文
1980-04-21

著者

重松峻夫
福岡大学医学部

わが国における寿命と年令層別健康度の地域差とその推移

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概要

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