著者
石橋 俊實 太田 清之 中川 秀三 近藤 宗一 内村 訪之 秋元 波留夫
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.10, no.4, pp.237-294, 1942-08-31 (Released:2010-11-19)

本研究は日本學術振興會第8小委員會に提出したものの一部である (内村)
著者
李 京銀 高坂 宏一 出嶋 靖志
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.68, no.1, pp.10-18, 2002-01-31 (Released:2011-10-21)
参考文献数
45

The present study examines the Korean sex ratio at birth using Vital Statistics Korea data from 1970 to 1998. Since 1980, in most years, the sex ratio at birth correlated positively with the birth order (p<0.05). The results demonstrate that the ratio has dramatically increased in the past two decades, especially for higher birth orders, with the ratio reaching a maximum of 224.7 and 202.8 in 1994 at the third and fourth birth orders, respectively . Korean society has traditionally held a strong preference for having sons. In the mid-1980s, advanced medical technology for sex predetermination and sex preselection became popular and enabled mothers to try to choose the sex of the baby. The increased sex ratio at birth at higher birth orders is presumably attributed to the technological advances . As a result, the Korean government introduced laws to prohibit using such medical technology . Other factors affecting the recent trends of sex ratio at birth are also discussed, including Korean culture and social trends such as the decline in fertility.
著者
濱松 由莉
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.80, no.1, pp.12-16, 2014 (Released:2014-03-28)
参考文献数
10

After the Great East Japan Earthquake in 2011, about 40,000 people out-migrated from the disaster-stricken areas of Iwate, Miyagi, and Fukushima prefectures. More females than males out-migrated, probably because females tended to fear the potential health hazards of radioactive leakage. In this study, we evaluated the impact of these migrations following the disaster on the sex ratio of the working-age population of all prefectures in Japan. We used the vital statistics in 2012 and 2010 as parameters that were and were not affected by the disaster, respectively. We estimated the future demographic structure using the demographic indices in 2010 and 2012. This analysis revealed that this disaster-induced migration will decrease and increase the sex ratio in the eastern and western parts of Japan, respectively, in 2032. In the disaster-stricken areas, the percentage of males increased in Miyagi and the percentage of females decreased in Fukushima, resulting in an increased sex ratio in both prefectures. Sex-specific migration after the disaster could result in geographical disparity of the sex ratio in Japan.
著者
小林 正子 竹本 泰一郎 田原 靖昭 田川 宜昌 東郷 正美
出版者
日本民族衛生学会
雑誌
民族衞生 (ISSN:03689395)
巻号頁・発行日
vol.61, no.6, pp.309-316, 1995-11-30
参考文献数
13
被引用文献数
12
著者
南条 善治
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.32, no.4, pp.122-127, 1966 (Released:2011-02-25)
参考文献数
14

Generation life table can be constructed by following a cohort of, say, 100, 000 persons from the moment of birth through successive calendar years, recording, in each year of life, the actual number of survivors, until all have been accounted for by death . In order to construct the generation life tables, it is necessary to make use of the data of death rates for the period of more than 100 years. But in the pre-census years, the death reports were incomplete and the populations were domicile, and not census enumeration. Hence these early life tables by the Bureau of Statistics before the census are quite unreliable. Therefore Matsuura and Mizushima attempted to reform these pre-census life tables. We used the estimated values of q0-q100 on the basis of these reformed life tables and many reliable life tables, so that we constructed the generation life tables of persons born in 1895. The tables shown here seem more reasonable and appropriate than those which have been known until the present day.
著者
守山 正樹 柏崎 浩 鈴木 継美
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.46, no.1, pp.22-32, 1980 (Released:2011-10-21)
参考文献数
110
被引用文献数
1 3

In Japan, the decline in the age at menarche after the Second World War has been repeatedly reported, but the observed period in the reports has not been long enough to evaluate the secular trend of it. More than a hundred reports of age at menarche of Japanese have been published from the year of 1886. More than half of these populations in the reports consisted of students or young workers, some of whom had not attained menarche at the survey, and the menarcheal ages were represented by the arithmetric mean for the menarche attained girls. Thus, ages at menarche of these reports have biases toward younger menarcheal ages which depend on the proportion of non-menstruating girls. The authors aimed to correct these biased menarcheal ages on the assumption that (1) menarcheal ages of a population distributes normally when all of the girls are menstruating; (2) when some girls are not menstruating, the distribution is censored sample of normal distribution. After eliminating these biases of historical sources, the trend of the menarcheal age in Japan (from the late 19th century to the present) was analysed.
著者
阿部 千春
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.76, no.3, pp.109-119, 2010 (Released:2010-07-23)
参考文献数
14
被引用文献数
1

Causes of child-murders/parent-suicides in Japan have been changed along with the socio-economic transitions in modern Japan. Objective of the study was to clarify the actual situations and causes of child-murders/mother-suicides, namely concrete ideas to be based when public services for maternal and child well-being is examined.Four hundred fifty eight incidents of child-murders/suicides by parent (s) or grandparent (s) extracted from newspaper articles during 1998 to 2007, and child-murders/mother-suicides were analysed mainly. Out of total 458 incidents, 300 incidents (65.5%) were child-murders/mother-suicides. The average age of the mothers in 2007 (36.5 years old) was older than that in 1998 (33.4). Main causes of mothers were anxieties of child-care, economic problems, and troubles in family. Anxieties of child-care had the highest rate. Relatively less economic problems and more anxieties of child-care were found among mothers' causes than those of fathers.Evidently, anxieties of child-care, continuously increased during the latter half of 1900s, became a main cause of recent child-murders/mother-suicides, while the causes differed by age and more diversified in older age groups. Effective supports of child-care have to respond to various needs of mothers.
著者
弓桁 亮介 角田 直也 堀川 浩之
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.81, no.3, pp.75-81, 2015 (Released:2015-07-10)
参考文献数
23

The purpose of this study was to clarify the part difference of change of body fat in Japanese young women. Subjects were 142 healthy female university students who were living in a dormitory. In particular, 21 subjects who showed the remarkable increased percentage of total body fat were grouped as the increase group. 24 subjects who showed the remarkable decreased percentage of total body fat were grouped as the decrease group. Body weight, total and regional body fat and muscle volume were measured by bioelectrical impedance analysis method. Each item was measured for two times in June and December.The difference of change in the percentage of body fat of a trunk showed the highest value in parts of the body. The difference of change in the percentage of body fat of an arm was higher than that of a leg.From these results, the part difference existed to a change of the body fat. It was suggested that the part in which body fat tends to increase is the part in which it tends to decreases.
著者
向笠 廣次 岡部 重穗 古賀 節郎
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.9, no.5, pp.355-398, 1941-11-30 (Released:2010-11-19)
参考文献数
31

Im Oktober und November 1940 wurden psychiatrische Zensusuntersuchungen in einigen japanischen Inzuchtgebieten durchgeführt. Urn die Einflüsse der Inzucht auf Psychosenhäufigkeit zu finden, wurden gleichzeitig die Inzuchtgrade der betreffenden Bevökerung untersucht. Diese Untersuchungen werden in mehreren Gebieten noch weiter fortgesetzt. Hier berichten Verff.. vorläufig über die Ergebnisse in bis heute erforschten drei Zählbezirken, welche durch Jahrhunderte lang deuernde Inzucht charakterisiert sind.
著者
藤野 隆雄
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.23, no.5-6, pp.158-170,A11, 1958 (Released:2010-11-19)
参考文献数
29

Researches on the taste-blindness tRo P. T. C. were first taken up by A. L. Fox in 1931, and since then many valuable reports have been published.The author has the pleasure to add here his study. Healthy Japanese of both sexes, 2281 in number, aged from eleven to eighty years, were examined with three test substances-henyl-tho-carbamide, lactose and aspirin.The results obtained are as follows.1, The percentage frequency of taste-blind persons, including so-called weak-tasters who are supposed to be almost near to taste-blindness, to P. T. C. was 11.09%, lactose 4.82%, and to aspirin 18.8%.2. In the percentages of tasters to each of these three substances, the sexual difference is statistically not significant3. No relation between taste-blindness and unbalanced feeding habit has been found.
著者
石野 晶子
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.82, no.6, pp.208-216, 2016-11-30 (Released:2016-12-26)
参考文献数
27

Questionnaires were administered to parents of children eligible to receive the human papillomavirus (HPV) vaccine to assess changes in parents’ awareness of the HPV vaccine and their needs regarding the vaccine after reports of its serious adverse events in the media. Parents lacked sufficient awareness of cervical cancer and no difference in awareness level was seen after the reports. However, a difference was seen in parents’ awareness of HPV vaccination after the reports of adverse events. This is thought to be because parents did not receive consistent information before and after the reports of the adverse events and because they had always been subconsciously concerned about the vaccination, due to a lack of sufficient awareness of the HPV vaccine. In particular, parents’ concern about side effects was the factor accounting for the difference in their awareness regarding HPV vaccination for children. This suggests that it is necessary to establish measures for providing parents with consistent information and knowledge on HPV vaccine.
著者
秋山 房雄 武藤 志真子 中根 孝子 渡辺 久子
出版者
The Japanese Society of Health and Human Ecology
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.43, no.1-2, pp.1-12, 1977 (Released:2012-02-17)
参考文献数
23

This is the second part of the study on famines, epidemics, socio-economic conditions, and combinations of these before the Meiji era. The great famine in the Tenmei period (1781-88) was discussed. The development of land, advance in commerce and alterations in agricultural policy were closely related to the disaster of famines. During the Tenmei famine, about a half a million people died in Oou district where the weather had been cold and the local government system was misguided. Although three fouth of deaths were caused by malignant influenza, death rate varied considerably from sex, age, social class, feudal clan and characteristics of area such as fishing village, farm village, city, etc. The severity of famine seemed to deter mine the severity of epidemics of diseases.
著者
竹内 昌平 山内 武紀 黒田 嘉紀
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.80, no.1, pp.17-22, 2014 (Released:2014-03-28)
参考文献数
16

The spread of influenza depends on contact among people. Contact rates are known to vary depending on the combination of age groups, which means that the age structure of a population affects the spread of influenza. We herein report how future changes in the population structure of Miyazaki Prefecture, a rural region in Japan, will affect the potential spread of influenza. We also report the results of an investigation on how future fertility changes will modify the potential spread through changes in the population structure. The basic reproduction number (R0) was used as an indicator of spread. The future population structure was projected by the cohort component method. Age-group-specific contact rates were obtained by a questionnaire survey. We found that the R0 of a new type of influenza will not change over the next 100 years if vital statistics remain constant (Scenario 0). If the total fertility rate increases by 10% or 25% from 1.7 (the level in 2011), the R0 in 2111 will be higher than that in Scenario 0. These results suggest that fertility recovery, an urgent demographic policy target in Japan, has the potential to increase the spread of influenza.
著者
松山 恒明
出版者
日本民族衛生学会
雑誌
民族衛生 (ISSN:03689395)
巻号頁・発行日
vol.38, no.2, pp.61-67, 1972 (Released:2011-10-21)
参考文献数
14

Since the 1920's, there has been a slow fluctuating upward trend in primary sex ratio (ratio of males to females at birth) in Japan. The factors :concerned with the rise of sex ratio have been analyzed by using the vital statistics and other data for the period from 1947-1969. There is no evidence indicating that the age of the mother or the birth order are contributing factors causing an increase in the ratio. The recent decrease in still birth rate suggests a possible relation with the increase of the sex ratio at birth. Provided that the ratio of the number of still births to that of live births were the same in the periods of 1955-64 and of 1965-69, the extent to which the sex ratio at birth in 1955-64 would be modified was calculated. By this calculation, the modified sex ratio at birth in 1955-64 was 106.2, in contrast the actual value was 105.8. The correlation between the sex ratio at birth and some social indices by prefectures has been examined in the respective periods of 1960-64 and 1965-69. For both periods, signifi cant correlation coefficients were obtained between the sex ratio at birth and the rate of hospitalization at delivery. Only in 1960-64, social indices as the percentage of employed persons in primary indust ries to total employees, the "MYNRYOKU" index (synthetic index of socioeconomic indices) and the percentage of women workers to total employees were significantly correlated with the sex ratio at birth by prefectures.