Fertility and mortality transition: patterns projections and interdependence.

摘要: The first of the two papers in this report describes and provides representations patterns rapid fertility mortality decline developing countries. Rapid is represented by a logistic equation for increase life expectancy at birth estimated from World Bank data 14 countries with most declines between 1950 1980. decline, 11 selected countries, shown to be adequately linear total rate about 0.22 points year. second these concerns linkage transition. Some effect on widely posted, behavioral evidence exists support particular linkages. Using data, an attempt made link timing transition levels birth. Transition defined start year that begins five-year drop least 0.7 points.