Otsu Akiko, Araki Shunichi, Sakai Ryoji, Yokoyama Kazuhito, Scott Voorhees A
Department of Public Health and Occupational Medicine, Graduate School of Medicine and School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8654, Japan.
Soc Sci Med. 2004 Mar;58(6):1137-46. doi: 10.1016/s0277-9536(03)00285-5.
The relationships between male or female age-adjusted suicide mortality and social life factors for all 47 Japanese prefectures in 1980, 1985 and 1990 were investigated by stepwise multiple regression analysis after classification of 20 social life indicators by factor analysis. During this period, Japan experienced the second economic crisis (the so-called secondary oil crisis) in 1980-1983 and economic prosperity (bubble economy) in 1986-1990. In all the three years, male suicide mortality was significantly related inversely to the urbanization and economic development factor, the result of which was consistent with the data in our previous study for the years 1970 and 1975. Similarly, the male mortality was positively related to the factor of migration of workers in the three years. No factor significantly related to female mortality for all the three years was found. It is suggested that (1) urbanization was a major determinant which prevented male suicide mortality during the past 20 years (1970-1990) in Japan; (2) migration of workers became an important factor for male suicide mortality during these 10 years; and (3) female suicide mortality was less vulnerable to social life factors for these 20 years than the male mortality.
通过因子分析对20项社会生活指标进行分类后，采用逐步多元回归分析，研究了1980年、1985年和1990年日本47个都道府县按年龄调整后的男性或女性自杀死亡率与社会生活因素之间的关系。在此期间，日本在1980 - 1983年经历了第二次经济危机（即所谓的二次石油危机），并在1986 - 1990年经历了经济繁荣（泡沫经济）。在这三年中，男性自杀死亡率均与城市化和经济发展因素呈显著负相关，这一结果与我们之前对1970年和1975年的研究数据一致。同样，在这三年中，男性死亡率与工人迁移因素呈正相关。未发现这三年中与女性死亡率显著相关的因素。研究表明：（1）城市化是过去20年（1970 - 1990年）日本男性自杀死亡率下降的主要决定因素；（2）在这10年中，工人迁移成为男性自杀死亡率上升的一个重要因素；（3）在这20年中，女性自杀死亡率相比男性死亡率，受社会生活因素的影响较小。
