Two sets of eight abridged life tables for the Korean -population in Japan, 1960-1$75 were constructed based on the deaths by age and sax of Vital Statistics published by the Japan Ministry of Health.-and Welfare, Statistics and Information Department, -and the population by age and sax which requires here two sources of the ,Japanese official statistics; the first was based on Census by the Statistics. Bureau of the Office of the Prima Minister, while the second -was based on the Statistical Report of the Foreigners in Japan by the Japan. Minister of. the -Justice according to the Raad-Marrall Method.
Since the crude death rates of Koreans in Japan dropped markedly during recent years, and
-consequently the expectation of life has been considerably prolonged, therefore, separate life
tables are frequently desirable for analyzing recant mortality trends of them.
From the analysis of this study which- is a part of demographic-ecological studies for the Korean
population in Japan, it may be summarized as follows.
1. The infant mortality rates of Koreans in Japan declined yearly as shown in Figure 2-1 and 2-2.
The values of q0 of Korean males and females in Japan using.-Census Data from 1960 to 1975 ware decreased yearly to 0.030, 0.018, 0.015, 0.019, in males, and to 0.022, 0.016, 0.009, 0.007, in females, respectively. .
At the same time, q0 for the period of 1959-61, 1964-66, 1969-71, and 1974-76 were also decreased to 0.030, 0.019, 0.013,-- 0.003 in males, and to 0.025, 0.017, 0.009, 0.006 in females, respectively.
2. Mortality rates by age and sex for. Koreans in Japan (1969-71) and Korea (1970) were compared with those of Japanese based on 1970 life table for the same year
The mortality rate at age 0 for Korean males and females in Japan were rather lower than that ´of Japanese, respectively, whereas qs of Korean females was about 1.6 times higher than that of Japanese, and q3s-qss for Korean males nearly 1.5 times higher than that of Japanese. Figure 5 and Table´ 10 presented that the infant and -child mortality rate in Korea showed the highest compared to that of Koreans in Japan and Japanese.
In case of Korean males in Japan the value mortality of qs and qs0 showed the highest in all age group.
3. Results from comparison of mortality rate between Koreans in Japan, for 1969-71 with similar level of expectation of life at birth showed that the ratios for the qo of Korean, males and females to that of Japanese were rather 0.5, 0.9, lower respectively, qs of Korean females was the highest with the ratio of 1.7, and the ratio of q3s-qS0 for the 35-54 age group showed particularly 1.4 times higher than that of-Japanese.
4. The number of- years of life he may expect out of the next n-years may be drawn from the life table. By an extension of this the percentage of survival ratio of the youth a. 20-and the aged at 70, can be compared.
The percentage of 120/4 for Korean males in Japan increased from 93.4 in 1960 to 97.5 in 1975 and for females it was also expanded from 95.3 in 1960 to 98.4 in 1975. At the same time, the percentage of 1,0/LO for Korean males in Japan increased remarkably from 27.6 in 1960 to 50.3 in 1975, and for females from 60.2 to 74.4, respectively. For the period of 1959-76´ the. percentage of 120/10 and Lo/lo also increased at the same level of the former, respectively. .
After reviewing the mortality pattern of Korean males 35-54 age group based on 1961-71 Life Table, it may be considered that the population of this age group was not` only inaccurate in population statistics but also in bad condition of health itself according to the survival ratio of 155/135(1970) by cohort since 1960.
5. The expectation of life at birth, etc. is often used as an indication of the level of mortality. According to the Census Data the &, of Korean males in Japan has risen from 57.64 in 1960 to 66.34 in 1975, or by nearly 9 years during fifteen years.
At the same time, the of Korean females in Japan has risen from 68.,17 in 1960 to 75.85 in 1915, or by about 8 years.
In the abridged life tables by Registration Statistics Report, the of Korean males and females in Japan for the period of 1959-61, 1964-66, 1969-71,. 1974-76 showed increasing pattern of 60.24, 63.60, 66.72, 69.32 for males, or by about 9 years similar to the former, and on the average by 3 years between each period.
Hence, it showed that difference of the expectation of life at birth between Korean males and females was 9. 9 years on the average while there were only 5. 2 years of difference for Japanese and 4. 8 years for Korean. Comparing the expectation of life at birth of Korean in Japan by sex with Japanese and Korean the e,, of Korean males and females was averagely 6. 1 and 1.4 years behind that of Japanese, respectively, while 1.9 years in males and 7.2 years in females higher than that of Korean.
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