乳児の出生と死亡に関する統計学的観察
第1報出生時の社会生物学的条件と出生との関係について
1961 年 27 巻 5 号 p. 379-416,A23
詳細
1961 年 27 巻 5 号 p. 379-416,A23
Statistical investigations were made on the birth weight of 14, 801 babies which were born in Namie Area in Fukushima prefecture during the period 1952 to 1957.
The birth weight were analysed in accordance with such factors that the monthly vatiation, seasanal variation, influence of birth order and mothers age.
The occurrence rate of premature birth was 6.6 percent (male 5.8, femal 7.5) of the total number of live births. The mean value of birth weight of male was greater than that of femal.
It was suggested that the limit of premature infant in femal must be lower than the in case of male.
The occurence rate of birth in January was the highest and the lowest in December.
The frequency of premature infant was the highest in the first born and the lowest in mother's age 25 to 29
