An eight-state union history model with a transient phase after sexual debut and marriage

Age of entry into the population at risk and the following union sequences are essential inputs for demographic and sexually transmitted infection models. These inputs are usually estimated separately from retrospective reports and current-status marital state. We fit the full union history as one joint-model of eight-state competing continuous time Markov chain using Demographic and Health Survey data from four countries with one to six survey rounds each. The fitted intensities are therefore estimated against the same exposure, structually producing consistent estimates for the proportion in

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