WorldPop, Department of Geography and Environment, University of Southampton, Southampton SO17 1BJ, UK.
Flowminder Foundation, Roslagsgatan 17, Stockholm SE-11355, Sweden.
Sci Data. 2017 Jul 19;4:170089. doi: 10.1038/sdata.2017.89.
The age group composition of populations varies substantially across continents and within countries, and is linked to levels of development, health status and poverty. The subnational variability in the shape of the population pyramid as well as the respective dependency ratio are reflective of the different levels of development of a country and are drivers for a country's economic prospects and health burdens. Whether measured as the ratio between those of working age and those young and old who are dependent upon them, or through separate young and old-age metrics, dependency ratios are often highly heterogeneous between and within countries. Assessments of subnational dependency ratio and age structure patterns have been undertaken for specific countries and across high income regions, but to a lesser extent across the low income regions. In the framework of the WorldPop Project, through the assembly of over 100 million records across 6,389 subnational administrative units, subnational dependency ratio and high resolution gridded age/sex group datasets were produced for 87 countries in Africa and Asia.
人口的年龄结构在各大洲和各国之间存在很大差异，与发展水平、健康状况和贫困程度有关。人口金字塔形状的国家间差异以及各自的抚养比反映了一个国家的不同发展水平，是国家经济前景和健康负担的驱动因素。无论是以劳动年龄人口与依赖他们的年轻和老年人口的比例来衡量，还是通过单独的年轻和老年人口指标来衡量，抚养比在国家之间和国家内部往往存在很大差异。对特定国家和高收入地区的国家间抚养比和年龄结构模式进行了评估，但在低收入地区的评估较少。在 WorldPop 项目的框架内，通过在 6389 个国家以下行政单位中汇编超过 1 亿条记录，为非洲和亚洲的 87 个国家制作了国家间抚养比和高分辨率网格化年龄/性别组数据集。
