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53 巻 , 4 号
選択された号の論文の5件中1~5を表示しています
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  • 鈴木 継美
    53 巻 (1987) 4 号 p. 171
    公開日: 2010/06/28
    ジャーナル フリー
  • 重松 峻夫, 久永 富士朗, 南條 善治
    53 巻 (1987) 4 号 p. 172-183
    公開日: 2010/06/28
    ジャーナル フリー
    Since 1955 we have reported the geographic variations of reproduction rates by prefectures in Japan. This report dealt with the results of the study for the years of 1975 and 1980. Method of estimating the number of births and female population by age was ameliorated and reported in detail in the separate report (Nanjo et al . 1987). In 1975 the prefectures where NRRs were kept above replacement level were 6, Okinawa, Nagasaki, Iwate, Fukushima, Miyazaki, and Shiga, and in 1980 only one, Okinawa. The highest NRR was observed in Okinawa for both 1975 and 1980, 1.4034 and 1.1340, and the lowest in Tokyo, 0.7763 and 0.6846 respectively. Geographic variations, which had changed due to the marked increments of NRRs in industrialized urban prefectures at the time of second baby-boom around 1970, have been returning to the former pattern of smaller NRRs in industrialized urban prefectures and larger ones in rural agricultural prefectures as observed in 1960. Distinct differences were noticed in age patterns of birth rates in different geographical area. Rural prefectures along the Japan Sea showed a pattern of higher rates in age 20's and lower rates after age 30's while prefectures having large cities with millions population showed the patterns of lower rates in 20's and higher rates after 30's. Age patterns of birth rates are closely related to the levels of NRR and prefectures with larger NRR have the former pattern, rural type, and those with smaller NRR the latter, urban type. The strong influence on NRR is now attributed to the fertility of age 20's rather than to the total fertility of ages from 15 to 49. Intrinsic vital rates were also calculated and given in the text .
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  • 西田 茂樹, 木村 正文, 林 謙治
    53 巻 (1987) 4 号 p. 184-191
    公開日: 2010/06/28
    ジャーナル フリー
    The purpose of this study is a re-exmination of population dynamics, especially of marriage, divorce and legitimate and illegitimate birth, in Japan for the late 19th century. Although statistical data concerning population dynamics in Japan had been officially gathered since 1872, the few studies that analyze marriage, divorce and legitimate and illegitimate birth in the 19th century have been carried out. The marriage rates for the period between 1883 and 1898 were estimated at around eight per 1, 000 people. This figure is roughly the same as the marriage rates in the 20th century but other two indices related to the marriage rate were lower than those of the 20th century. The divorce rates for the corresponding period were estimated at three times higher than those of the 20th century . The birth rates for the period between 1872 and 1898 were estimated at around 30 per 1, 000 people and showed the increasing trend. But such increase was considered to be caused by the improvement of the registration system. For the same reason both the legitimate birth rates and the illegitimate birth rates showed the increase for the period between 1886 and 1898. But it is noteworthy that the ratio of illegitimate births to legitimate births had been elevating in those days.
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  • 豊川 裕之, 加藤 知己, 佐伯 圭一郎, 矢ケ崎 信子, 岸田 謙一, 李 廷秀
    53 巻 (1987) 4 号 p. 192-200
    公開日: 2011/02/25
    ジャーナル フリー
     A-mode式超音波皮脂厚計(TATT TH-500)を用いて,日本人の皮下脂肪厚の性・年齢別度数分布を作成するために,今回は小学生(1~6年生)の皮脂厚の計測を行なった.1986年5月から7月にかけて東京都にある4つの某小学校の児童1925人(男子:984人,女子941人)を対象にして,4部位の皮脂厚を計測した.主な結果は以下の通りである. (1)小学生の全学年(7~12歳)において,いずれの部位でも女子の皮脂厚の方が男子よりも厚い傾向が認められた. (2)小学生における4部位(biceps,triceps,subscapular,suplailiac)の皮脂厚は,年齢に伴い概ね漸増する傾向が示唆された. (3)超音波皮脂厚計を用いて,4部位における小学生の皮脂厚の度数分布を作成した. (4)部位別皮下脂肪厚と身長,体重,Kaup指数との関連を,年齢の影響を除去して男女別にそれぞれ全例について検討したところ,以下に示す結果が得られた. 1)身長と各部位別皮下脂肪厚及びこれらの合計値との間には男女ともに正の相関(0.2~0.3)が認められた. 2)男女ともに,体重が重いほど各部位別皮脂厚値及びこれらの合計が大きいという関係が認められた. 3)Kaup指数が体重,比体重,Rohrer指数よりも皮脂厚値と最も強い正の相関が認められた.
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  • 金子 俊, 松村 康弘, 西川 浩昭, 丸井 英二
    53 巻 (1987) 4 号 p. 201-205
    公開日: 2010/06/28
    ジャーナル フリー
    Food consumption surveys of the female population were conducted every year in a semi-rural community for eight years. The authors examined their commitment to the surveys. The surveys have been executed on women's food consumption by weight record method every year since 1978 in Ohami-Shirasatocho, chiba prefecture. The results were as follows : 1) The population size was 108 in the first year, and it increased gradually to 196 persons in 1980. The number of the participants of the survey was between 80 and 106. The participation rate of the population was 74.1% in 1978 and 82.5% in 1979. It decreased gradually to 49.0% in 1985. 2) The participation rate showed decreasing tendency during the observed pariod with some fluctuation. Half of the participants in the first year remained in the survey in the last observed year. 3) Up to the fourth year, the rate of those who dropped out was over 60%. But, it became fewer after that year. About 24% of the original participants in the first year still remained as active participants in 1985, even after eight years. 4) The frequency of participation shows ; while the participants in 1978 were surveyed 7 or 8 times, those who began to participate in subsequent years were less active in the survey. 5) It is desirable to consider these factors at the planning stages of the field survey in order to maintain a certain number of participants.
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