The effect of informal social support on the health of Chinese older adults: a cross-sectional study

BMC Public Health

Table 5 Estimated results based on PSM regression

Matching algorisms	Multiple FE	Treated	Controls	ATT	SE	T-statistic
Nearest neighbor	NO	0.794	0.769	0.026^***	0.009	3.02
Nearest neighbor	YES	0.794	0.761	0.033^***	0.010	3.37
Radius	NO	0.794	0.769	0.025^***	0.008	3.23
Radius	YES	0.794	0.763	0.031^***	0.009	3.45
Kernel	NO	0.794	0.768	0.027^***	0.008	3.44
Kernel	YES	0.794	0.763	0.031^***	0.009	3.50
Local linear regression	NO	0.794	0.773	0.021^**	0.010	2.03
Local linear regression	YES	0.794	0.765	0.030^**	0.012	2.45

ATT, the average treatment effect on the treated. SE, standard errors. Multiple FE indicated that we simultaneously control the provincial FE, regional FE, and community FE, as well as the income FE in the econometric model. ^*, ^**, and ^*** indicate statistically significant levels of 0.1, 0.05, and 0.01, respectively

ISSN: 1471-2458