Evaluation of an experimental short interview form designed to collect fertility data: The case of Peru

A comparison is made of demographic data gathered using an experimental short interview form with that from the more traditional in-depth fertility and contraceptive KAP interview. The short form is weakest in measuring current fertility, somewhat more adequate in measuring cumulative fertility, and about equally as effective as the depth interview in measuring infant/child mortality. Most of the deficiency in the quality of the short-interview data can be attributed to accepting information from other household members or neighbors when the woman herself was not available.