Endogenous Covariates in Duration Models and the Effect of Adolescent Childbirth on Schooling
使用含内生协变量的风险模型，估计家庭背景、就业机会和生育对低收入家庭青少年辍学的影响。发现生育与辍学共同决定，但控制内生性后生育对辍学影响不显著。
This paper uses a hazards model with endogenous covariates to estimate the effects of family background, employment opportunity, and childbearing upon the school dropout of youths from low-income households. Family background and employment opportunity are found to be significant, but when the effect of childbearing is properly estimated, it is not significant. The authors conclude that childbearing and dropout are jointly determined, but that when this is properly accounted for, childbearing appears to exert little effect upon dropout.