Fertility and self-rated health of migrant women of childbearing age—an analysis of moderating effects based on socioeconomic status

Table 5 Robustness tests (Propensity score matching)

Matching method	Average treatment effect	Bootstrap std.error	T-value
K-Nearest neighbor matching	-0.017	0.005	-3.51***
Radius matching	-0.014	0.004	-3.39***
Kernel matching	-0.014	0.004	-3.43***
Intra-caliper k-nearest neighbor matching	-0.017	0.004	-4.16***

Note K nearest neighbor matching set K = 4; radius matching set caliper value = 0.01; kernel function and bandwidth of kernel matching use their default values; intra-caliper K-nearest neighbor matching set K = 4, caliper value = 0.01; Bootstrap sampling number is 100.

ISSN: 1472-6874