This is an introduction to a special issue on aspects of demographic aging in Asia. It provides "an overview of the issues related to the rapid increase in the number of elderly in some Asian countries. It describes how the articles contained in this special issue...demonstrate that the familial system of support for the elderly has persisted despite major social and economic change. It also...

The negative frequency-dependent effect of reproductive success in animals on population growth refers to a category of phenomena termed the Allee effect. The mechanistic basis for this effect and hence an understanding of its consequences has been obscure. We suggest that sexual selection, in particular female mate preferences, is a previously neglected component giving rise to the Allee effec...

BACKGROUND Of global concern is the decline in under five children mortality which has reversed in some countries in sub Saharan Africa (SSA) since the early 1990 s which could be due to disparities in access to preventive services including immunization. This paper is aimed at determining the trend in disparities in completion of immunization using Tanzania Demographic and Health Surveys (DHS)...

OBJECTIVES To derive the best possible estimates of trends in age at first sex (AFS) among successive cohorts of Ugandan men and women based on all the data available from the Demographic and Health Surveys (DHS) and cohort studies in Masaka and Rakai districts. METHODS The datasets from the DHS, Masaka cohort and Rakai cohort were analysed separately. Survival analysis methods were used to e...

Population control has been a huge policy issue of the twenty first century and has been a topic of discussion in the world’s capitals. Overuse of natural resources, poverty and high mortality rates were the key issues that raised population control. The data used in this study is taken from the 2008/2009 Demographic and Health Surveys (DHS) for Kenya. The sample used in this study consists a t...