UNITED NATIONS EXPERT GROUP MEETING ON POPULATION DISTRIBUTION, URBANIZATION, INTERNAL MIGRATION AND DEVELOPMENT Population Division Department of Economic and Social Affairs United Nations Secretariat New York, 21-23 January 2008 THE HEALTH OF URBAN POPULATIONS IN DEVELOPING COUNTRIES*

UNITED NATIONS EXPERT GROUP MEETING ON INTERNATIONAL MIGRATION AND DEVELOPMENT Population Division Department of Economic and Social Affairs United Nations Secretariat New York, 6-8 July 2005 INTERNATIONAL MIGRATION IN CENTRAL AND EASTERN EUROPE – CURRENT AND FUTURE TRENDS

United Nations Expert Group Meeting on Population Distribution, Urbanization, Internal Migration and Development

UNITED NATIONS EXPERT GROUP MEETING ON INTERNATIONAL MIGRATION AND DEVELOPMENT IN ASIA AND THE PACIFIC United Nations Economic and Social Commission for Asia and the Pacific

* The views expressed in the paper do not imply the expressions of any opinion on the part of the United Nations Secretariat.

Bayesian Reconstruction of Past Populations and Vital Rates by Age for Developing and Developed Countries∗

We extend Bayesian population reconstruction, a recent method for estimating past populations by age, with fully probabilistic statements of uncertainty. It simultaneously estimates age-specific population counts, fertility rates, mortality rates and net international migration flows from fragmentary data while formally accounting for measurement error. As inputs, Bayesian reconstruction takes ...

Half the world ’ s population is urban

Half of the world’s inhabitants (3.3 billionpeople) now live in towns and cities. Andmost of the world’s urban dwellers live indeveloping countries, where populations arelargest. Indeed, one in two live in Asia, hometo two-thirds of humankind. Over the lastf if ty years, urban populations have beengrowing much faster in poorer countries thanin the richest ones (4...