Relationship between social interaction and health of the floating elderly population in China: an analysis based on interaction type, mode and frequency

Table 3 Instrumental variable estimation results

variable	stage I	stage II
Interaction frequency		0.070^***
Interaction frequency		(0.021)
the degree of hometown culture maintenance	-0.039^***
the degree of hometown culture maintenance	(0.011)
Housing property	0.117^***
Housing property	(0.020)
Region characteristics	controlled
P(DWH)	0.014
F (weak instrumental variable test)	20.51
P (overidentification test)	0.297
R²	0.239
Sample size	5239

Notes: *、**、*** respectively denote the significance of 10%, 5% and 1%, Standard errors are contained within parentheses

ISSN: 1471-2318