Contributions of natality models to program planning and evaluation.

This paper is an attempt to describe and assess the contributions made by the newer quantitative models of natality to program planning and development. Considerable interest in models of natality is being reflected in reports of a large variety of ideas, suggestions, and proposed models. In view of this current activity, any assessment made now of the contributions of these models can be only tentative and should consider also prospects for the future.

An analytic simulation model of human reproduction with demographic and biological components.

Abstract This Monte Carlo model for simulating the reproductive history of a cohort of women is described in detail. The model provides for patterns of survival, sterility, formation and dissolution of sexual unions, fecundability, lactation, foetal wastage, family planning practices etc. Natality indices specific for marital status, for duration of marriage and for age, as well as analyses of birth spacing patterns are among the results that may be obtained.