Anglewicz Philip, Corker Jamaica, Kayembe Patrick
Department of Global Community Health and Behavioral Science, School of Public Health and Tropical Medicine, Tulane University, 1440 Canal St Suite 2210, New Orleans, LA USA.
Bill and Melinda Gates Foundation, 440 5th Ave N., Seattle, WA 98109 USA.
Genus. 2017;73(1):4. doi: 10.1186/s41118-017-0020-8. Epub 2017 May 30.
The rapid population growth of many African cities has important implications for population health, yet little is known about factors contributing to increasing population, such as the fertility of internal migrants. We examine whether in-migrants to Kinshasa have different fertility patterns than lifetime Kinshasa residents, and identify characteristics of migrants that may explain differences in fertility. We also use detailed migration histories to examine whether fertility differs by features of migration. We use representative data from the PMA2020 Project for 2197 women in Kinshasa, including 340 women who moved to Kinshasa. We examine differences between migrants and non-migrants in fertility and other fertility-related characteristics. We also examine whether fertility differs by duration of residence in Kinshasa, number of lifetime moves, age at first migration, urban/rural classification of birthplace, and the distinction between intra-Kinshasa migration and migration to Kinshasa.. Migrants have significantly higher fertility than permanent Kinshasa residents, but the difference is relatively small in magnitude. This higher fertility appears due in part to patterns of contraceptive use among migrants. There is noteworthy heterogeneity among migrants: higher fertility among migrants is associated with longer duration in Kinshasa, more lifetime moves, urban-Kinshasa migration, older age at first migration, and moving to Kinshasa from outside (as opposed to intra-Kinshasa migration).
许多非洲城市的人口快速增长对人口健康具有重要影响，但对于导致人口增长的因素，如国内移民的生育率，我们却知之甚少。我们研究了迁入金沙萨的移民与终生居住在金沙萨的居民的生育模式是否不同，并确定了可能解释生育差异的移民特征。我们还利用详细的移民历史来研究生育率是否因移民特征而异。我们使用了来自PMA2020项目的金沙萨2197名女性的代表性数据，其中包括340名迁入金沙萨的女性。我们研究了移民与非移民在生育率及其他与生育相关特征方面的差异。我们还研究了生育率是否因在金沙萨的居住时长、终生迁移次数、首次迁移年龄、出生地的城乡分类以及金沙萨市内迁移与迁入金沙萨的区别而异。移民的生育率显著高于金沙萨的常住居民，但差异幅度相对较小。这种较高的生育率部分归因于移民的避孕使用模式。移民中存在值得注意的异质性：移民中较高的生育率与在金沙萨更长的居住时长、更多的终生迁移次数、从金沙萨市内迁移、首次迁移年龄较大以及从金沙萨以外地区迁入（而非在金沙萨市内迁移）有关。
