Professor Hiroshi Yoshida of the Center for Aging Economics and Social Studies, Graduate School of Economics, Tohoku University, et al. He pointed out that the two cannot simply be compared.Regarding the total fertility rate in 2015 announced by the Ministry of Health, Labor and Welfare, the problem of the calculation method was improved and the recalculated total fertility rate by prefecture was announced.
The total fertility rate is calculated by summing up the age-specific fertility rates from 15 to 49 years old (the number of births by age of the mother divided by the female population of that age).While the Ministry of Health, Labor and Welfare's nationwide total fertility rate calculation method uses data only for Japanese people, not including foreigners, for both the number of births and the female population, the number of births is Japanese by prefecture. Only data and data on the total population including foreigners are used for the female population due to restrictions on the materials.
Because of this difference in calculation method, the total fertility rate by prefecture cannot be simply compared with that of the whole country. Therefore, Professor Yoshida et al. Recalculated the total fertility rate by prefecture in 2015, which can be compared with the national value.As a result, the total fertility rate of Ibaraki, Yamanashi, and Hyogo prefectures out of the 1.46 prefectures calculated by the Ministry of Health, Labor and Welfare to be 14 or less is higher than the national value, and the ranking of each prefecture is also high. Large fluctuations.Fukui prefecture, which was 10th in the Ministry of Health, Labor and Welfare, was 6th, Nagano prefecture, which was 14th, was 11th, Aichi prefecture, which was 27th, was 22nd, and Gifu prefecture, which was 27th, was 19th. The result was a place.
Professor Yoshida's point was taken up at the 2015th Diet in 189, and the government replied that it would revise the calculation method to follow the Center for Economic and Social Studies for the Elderly.
