Measures of retirement that take a cohort perspective are appealing since retirement patterns may change, and it would be useful to have consistent measures that would make it possible to compare retirement patterns over time and between countries or regions. We propose and implement two...

We derive transition probability matrices for chronic health conditions using survey prevalence data. Matrices are constructed for successive age groups and the sequence represents the "age dynamics" of the health conditions for a stationary population - the probabilities of acquiring the...

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 compact...

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 different ages,...