This study provides a summary of recently proposed alternatives period measures of "longevity" and assesses whether empirical differences between these measures are consistent with predictions from analytic studies. Particular attention is given to the tempo effect. Three of the five period...

There is a very large but scattered literature debating the economic implications of high fertility. This paper reviews the literature on three themes: (a) Does high fertility affect low-income countries'prospects for economic growth and poverty reduction? (b) Does population growth exacerbate...

type="main" <p>This study examines the potential role that information about trends in causes of death could have in improving projections of mortality in low-mortality countries. The article first summarizes overall trends in mortality by cause since the middle of the twentieth century. Special...</p>

This paper reviews the evolution of the HIV/AIDS epidemic and provides estimates of past trends and future projections of AIDS mortality indicators, including numbers of AIDS deaths, the proportion of all deaths that are due to AIDS, and life expectancy. In 2007, a total of 2.0 million men,...

Cover -- Front Matter -- Preface -- Contents -- Tables and Figures -- Executive Summary -- 1 Introduction -- 2 The Accuracy of Past Projections -- 3 Transitional Fertility -- 4 Posttransition Fertility -- 5 Mortality -- 6 International Migration -- 7 The Uncertainty of Population Forecasts --...