The twinning rate has increased dramatically over the last four decades in developed countries. Two main factors drive this increase: delayed childbearing, as older women tend to have twins more frequently, and the expansion of assisted reproductive technology (ART), which carries an increased...

Africa continues to suffer from an acute lack of healthcare provision. Is the construction of new healthcare facilities sufficient to improve the health of the population? This is certainly a question raised when the opening of a new hospital fails to bring about any rapid improvement in health...

This paper provides an overview of trends in mortality in children aged under 5 and adults between the ages of 15 and 60 in sub-Saharan Africa, using data on the survival of the children and siblings collected in Demographic and Health Surveys. If conspicuous stalls in the 1990s are disregarded,...

Pison Gilles. ? A Demographic Study of Polygyny. In this paper three demographic problems consequent on the existence of polygyny are examined. The first relates to the functioning of the marriage market. Given that there is rough numerical equality between the sexes, how can a system of...

Child mortality has declined in Sub-Saharan Africa over the last 60 years but the decrease has not been regular: it has accelerated over some periods, as during the last decade, and slowed down in others. This is not solely attributable to HIV/AIDS. This paper examines in detail the trends...