Influential Article Review - Based Demographic Predictions with Migration Uncertainty

Abstract

This paper examines migration. We present insights from a highly influential paper. Here are the highlights from this paper: We produce probabilistic projections of population for all countries based on probabilistic projections of fertility, mortality, and migration. We compare our projections to those from the United Nations’ Probabilistic Population Projections, which uses similar methods for fertility and mortality but deterministic migration projections. We find that uncertainty in migration projection is a substantial contributor to uncertainty in population projections for many countries. Prediction intervals for the populations of Northern America and Europe are over 70% wider, whereas prediction intervals for the populations of Africa, Asia, and the world as a whole are nearly unchanged. Out-of-sample validation shows that the model is reasonably well calibrated. For our overseas readers, we then present the insights from this paper in Spanish, French, Portuguese, and German.