Background: Surveys of chronic health conditions provide information about prevalence but not about the incidence and the process of change within the population. Objective: We show how the “age dynamics” of chronic conditions ‐‐ the probabilities of contracting the conditions at...

OBJECTIVE: The paper explores the population effects of male preference stopping rules and of alternative combinations of fertility rates and male-biased birth sex ratios. METHODS: The “laboratory” is a closed, stable population with five age groups and a dynamic process represented by a...

Population aging is a problem common to many countries: an increasing proportion of retired people, a decreasing proportion of working age, and resultant downward pressure on national product per capita. We explore longer-run aspects of immigration as a policy instrument in this context. We...