Global Trends of Population Change at Subnational Level.

Alessandra Carioli , University of Southampton
Carla Pezzulo, WorldPop, School of Geography and Environmental Science, University of Southampton
Sophie Hanspal, University of Southampton
Theo Hilber, University of Southampton
Natalia Tejedor, University of Southampton
Graeme Hornby, University of Southampton
David Kerr, University of Southampton
Kristine Nielsen, University of Southampton
Linda Pistolesi, Center for International Earth Science Information Network (CIESIN), Columbia University
Susana Beatriz Adamo, CIESIN-Columbia University
Jane Mills, CIESIN
Jeremiah J. Nieves, University of Southampton
Heather Chamberlain, University of Southampton
Andrea Gaughan, University of Louisville
Forrest Stevens, University of Louisville
Catherine Linard, Université de Namur
Maksym Bondarenko, University of Southampton
Greg Yaetman, CIESIN
Alessandro Sorichetta, University of Southampton
William James, University of Leeds
Andrew J. Tatem, University of Southampton

The age and sex composition of populations varies substantially between and within countries, and is tightly intertwined to economic and health outcomes. This is particularly true for low- and middle-income countries, where the fast paced population increase is not nationally homogeneous but rather urban-driven, with important repercussions on health infrastructures, resources availability, internal migration and shifting dependency ratios. As a result of this, the association between population increase Indeed, population structure has long been considered to be a predictor for the development of nations, their economic growth, demographic burdens and challenges. In this context, the Sustainable Development Goals moral imperative of leaving no-one behind requires accurate measures at local scale that take into account high degrees of spatial heterogeneity present sub-nationally. However, the spatial detail is often overlooked losing substantial demographic variation, as preference for national-level measures is still widespread, due to longstanding practice in research and data availability. We aim to provide population based metrics of population exposures by 17 age-groups and sex detail at subnational level for all 248 countries in the world over a timeframe of 21 years.

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 Presented in Session P3. Poster Session Migration, Economics, Environment, Methods, History and Policy