In this project we attempted to determine the influence of day-and night-shift working coditions upon the unconscious behaviour of the workers using the overall concept of dividing their personalities into "superficial" and "deep" levels, unlike the conventional methods employed. Although it is premature to think that this method can immediately be applicable, it may become a useful method for the analysis of acquired influences. For explicit behaviour, like "living tempo" or "time language", a strong introvertive consciousness is required, whereas facial expressions, actions, or speech, which characterize dynamic patterns and indications, are outwardly exhibited and are regarded as a cluster of variables enabling observations from the outside. This allows us to utilize the characteristics of inhibiting a defensive reaction, and secondly by enabling the recognition of the influence after a long period of time thus becoming an effective means of standardizing the method for future research and development.
Current study focussed on the interprefectural variation and chronological trend of teenage fertility; 1952-1981 for birth rates and 1972-1982 for abortion rates respectively, intending to provide the information on demographic aspect for the health professionals. Such information is considered to be vitally essential to map out a long term policy for controlling the unfavourable outcomes of the events . The results were as follows: 1. The prefectures with the highest birth rates were limited to northern and southern area of this country during the period of 1954-1957 and the decreasing trend has rapidly become apparent thereafter in these prefectures . On the other hand, there existed two prefectures with the lowest birth rates in central Japan (Nagano and Yamanashi) during the corresponding period, and perfectures with equivalent rates subsequently have appeared in the neighbouring areas taking route to Tokai, Hokuriku-Tohoku and Hokuriku-Sanin. 2. All prefectures over all country were categorized into four of time serial patterns in terms of teenage birth rates. It is notable that five prefectures in West Japan have reversely increased their teenage birth rates during the past fifteen years. 3. Kyushu and Tohoku area have gathered the prefectures with the highest abortion rates forming a couple of geographically distinct blocs during the period of 1978 -1982. Six prefectures which has increased their rates by more than 100 per cent localized in the area of Tohoku and northern part of Kanto. 4. In association with local sense of life, factors closely attached to daily life were more strongly corelated with birth rates as compared to abortion rates.
The census data and the vital statistics classified by the workers and their families in 1920, 1 930, 1940, 1960 and 1970 were used to consider the difference in mortality among the industrial societies in Japan . The distinct difference in the health status among the industrial societies was found to be in existence not only because of the risks related to the work but also because of the generally influential factors existing in the industrial societies towards the daily life of the workers and their families. For example, the mortality of both the workers and their families in "mining" was very high, the mortality in "agriculture" decreased after war in almost every cause of death except "suicide", and the healthy workers tended to be engaged in"manufacturing" and the tertiary industries. We have hereafter to make a greater effort to find the factors influencing the health status existing in the industrial societies in Japan and to improve it.
The authors has introduced a newly found investigation record on the Japanese nutritional status during the war. It was published as a secret document in December, 1948, carried out by the Institute of the Ministry of Health and Walfare. It has never been cited in any historical writings on nutrition after the war. Department of Health Science investigated the physical status and diseases . On the other hand, Department of National Nutrition collected nutritional data with the food consumption survey. The survey staffs were Dr. Koya, Dr. Yamakawa, Dr. Tachikawa, Dr. Kubo, Dr. Nobechi, Dr. Sugimoto and so on. They have been famous as the members of Japanese societies of public health and allied sciences. The report includes as followings: (1) On school children; physical constitution, nutritional status, carrying luncheon and its food items, and the uses of eutrophics. (2) On pregnant women and neonatal children; body weight, morbidity rate, the items, frequency and quantity of the staple food, and the purchase of the food stuffs. (3) On salaries men in urban areas; body weight, morbidity conditions of tuberculosis and beriberi etc., quantity and quality of staple foods, food stuffs of subsidiary foods, items of snacks and the uses of eutrophics. (4) On the workers of several important factories; body weight, intake of protein and energy. As well as this survey was performed nation-widely, it was summed up and appreciated statistically as to yearly trend, region, sex, occupation and so on. This report can be evaluated not only as a basic historical record to prove the condiiton under the war, but also as a precious material to study the later nutritional effects for the people who had spent the under-nutritional period during the after the war time.