Lee, Myoung-jae; Lee, Sanghyeok - In: Missing-data methods: cross-sectional methods and …, (pp. 63-91). 2011
Standard stratified sampling (SSS) is a popular non-random sampling scheme. Maximum likelihood estimator (MLE) is inconsistent if some sampled strata depend on the response variable Y (‘endogenous samples’) or if some Y-dependent strata are not sampled at all (‘truncated sample’ – a...