Okui Tasuku
Medical Information Center, Kyushu University Hospital, Fukuoka City, Japan.
Eur J Obstet Gynecol Reprod Biol. 2025 Feb;305:17-22. doi: 10.1016/j.ejogrb.2024.11.050. Epub 2024 Nov 30.
There is a paucity of studies investigating sociodemographic characteristics of maternal mortality in Japan. In this study, we investigated the sociodemographic factors associated with maternal mortality in Japan using national data.
The Vital Statistics data in Japan (birth and mortality data) from 2010 to 2022 were used in the analysis. Region, maternal age group, maternal nationality, maternal marital status, and the main type of occupation in the household (household occupation) were used as sociodemographic variables. The maternal mortality ratio per 100,000 live births, maternal age group-specific maternal mortality ratio, and the maternal mortality ratio standardized by maternal age group were calculated by the sociodemographic characteristics.
A total of 12,535,198 live births and 457 maternal deaths were included in the analysis. The age-standardized maternal mortality ratio of metropolitan areas was the lowest among regions. The age-standardized maternal mortality ratio of non-Japanese mothers was approximately twice as high as that of Japanese mothers, and the ratio of unmarried mothers was approximately five times as high as that of married mothers. The age-standardized maternal mortality ratio of households with a full-time worker in a larger company and unemployed households was the lowest and highest, respectively, among household occupations, and that of unemployed households was approximately nine times as high as that of households with a full-time worker in a larger company.
Some sociodemographic factors, such as maternal marital status and type of household occupation, were associated with maternal mortality in Japan.
在日本，对孕产妇死亡的社会人口学特征进行调查的研究较少。在本研究中，我们使用全国数据调查了与日本孕产妇死亡相关的社会人口学因素。
分析采用了日本2010年至2022年的生命统计数据（出生和死亡数据）。地区、孕产妇年龄组、孕产妇国籍、孕产妇婚姻状况以及家庭主要职业类型（家庭职业）被用作社会人口学变量。根据社会人口学特征计算每10万例活产的孕产妇死亡率、特定孕产妇年龄组的孕产妇死亡率以及按孕产妇年龄组标准化的孕产妇死亡率。
分析共纳入12535198例活产和457例孕产妇死亡。大城市地区的年龄标准化孕产妇死亡率在各地区中最低。非日本籍母亲的年龄标准化孕产妇死亡率约为日本籍母亲的两倍，未婚母亲的这一比率约为已婚母亲的五倍。在家庭职业中，大公司有全职员工的家庭和无业家庭的年龄标准化孕产妇死亡率分别最低和最高，无业家庭的这一比率约为大公司有全职员工家庭的九倍。
一些社会人口学因素，如孕产妇婚姻状况和家庭职业类型，与日本的孕产妇死亡有关。
