Grandparental Childcare and Second Birth in China: Evidence from a Dynamic Model and Empirical Study

Table 8

ATT estimates for subgroups of couples: the treatment effect of having grandparents as the primary-care provider for the first child on having the second birth.

Subgroups of couples	Sample size	Mean		ATT	SE	T-stat
		Treated	Controls
Both rural Hukou	50,845	0.535	0.489	0.046	0.009	5.40
At least one urban Hukou	10,195	0.339	0.293	0.045	0.018	2.56

NNM is used as the matching method.