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

Table 7

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

Subgroups	Sample size	Mean		ATT	SE	T-stat
		Treated	Controls
Working	21,905	0.489	0.410	0.079	0.012	6.45
Nonworking	7,564	0.597	0.549	0.111	0.027	4.06

NNM is used as the matching method.