Convergence and divergence in mortality: A global study from 1990 to 2030

PLoS One. 2024 Jan 17;19(1):e0295842. doi: 10.1371/journal.pone.0295842. eCollection 2024.

Abstract

An empirical question that has motivated demographers is whether there is convergence or divergence in mortality/longevity around the world. The epidemiological transition is the starting point for studying a global process of mortality convergence. This manuscript aims to provide an update on the concept of mortality convergence/divergence. We perform a comprehensive examination of nine different mortality indicators from a global perspective using clustering methods in the period 1990-2030. In addition, we include analyses of projections to provide insights into prospective trajectories of convergence clubs, a dimension unexplored in previous work. The results indicate that mortality convergence clubs of 194 countries by sex resemble the configuration of continents. These five clubs show a common steady upward trend in longevity indicators, accompanied by a progressive reduction in disparities between sexes and between groups of countries. Furthermore, this paper shows insights into the historical evolution of the convergence clubs in the period 1990-2020 and expands their scope to include projections of their expected future evolution in 2030.

MeSH terms

  • Global Health*
  • Mortality*
  • Prospective Studies

Grants and funding

This work was partially supported by the funded chair UB-Longevity Institute. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.