Perhaps unique in this regard, all of the parameters used in the model were obtained from indigenous data. No reliance was placed on international sources. Although BDHS94 is a cross sectional survey, it contains six years of reproductive history and contraceptive use. This calendar forms the basis for estimating transition probabilities.
Future usage is based on women's declared intentions to use contraceptive methods in the future.
Unlike most population and contraceptive usage projections, this analysis does not depend on a priori prevalence or fertility targets. Cross tabulations and standard descriptive measures form the bulk of the statistical procedures employed. Syntax for all of the calculations is available and repeatable. Based on Bongaardts' proximate determinants fertility model, this variant uses acceptance and continuation as input instead of prevalence or fertility. Since six years of history is available in BDHS94, future work could explore rates of change in acceptance and continuation and form a true second order model.