The estimation of age and sex profiles for international migration amongst countries in the Asia-Pacific region

Information on the age and sex patterns of international migration occurring amongst countries in the Asia-Pacific region is important for researchers and policymakers to understand the contributions of migration towards demographic, economic and social changes. However, despite its importance, statistics on the age and sex patterns are largely absent and, where they do exist, there are considerable differences in measurement and data collection procedures. In this study, we develop a methodology for indirectly estimating the age and sex patterns of international migration for 53 populations in the Asia-Pacific region and four macroworld regions. Multiplicative component models are used to systematically combine information from multiple data sources and infer missing data, resulting in complete and harmonised tables of migration by origin, destination, age, and sex from 2000 to 2019. The estimates are presented and assessed with some discussions on how they may be applied and further improved.