Rezaee, Alireza; Ganjali, Mojtaba; Samani, Ehsan Bahrami - In: Swiss Journal of Economics and Statistics 158 (2022) 1, pp. 1-15
sample selection model. Each nonresponse level is considered as a selection rule, and classical Heckman model is extended … misspecification and biased results. Nonresponse variable is usually assumed as a binary variable, and it is used to construct a sample … selection model in many researches. However, this variable is a multilevel variable related to its reasons of occurring. Missing …