The association between Urban and Rural Resident Basic Medical Insurance and instrumental activity of daily living disability among middle-aged and older adults in China

Table 4 IV-Probit estimation results of the association between Urban and Rural Resident Basic Medical Insurance and instrumental activity of daily living disability among the middle-aged and older adults in China

Variable	First stage	Second stage
	URRBMI	IADL disability
	(1)	(2)
Participation rate of URRBMI at the community level	0.9863^**
Participation rate of URRBMI at the community level	(0.0210)
URRBMI		-0.3419^**
URRBMI		(0.1180)
Age	0.0006	0.0355^**
Age	(0.0007)	(0.0039)
Gender	0.0040	-0.3371^**
Gender	(0.0122)	(0.0713)
Marital status	0.0157	0.1438
Marital status	(0.0183)	(0.1007)
Residency area	-0.0082	-0.0582
Residency area	(0.0124)	(0.0724)
Education status	0.0342^*	-0.2801^**
Education status	(0.0159)	(0.0838)
Household income	0.0032	-0.0407^**
Household income	(0.0019)	(0.0109)
PM_2.5 concentrations	0.0001	-0.0009
PM_2.5 concentrations	(0.0004)	(0.0023)
Having tap water	0.0055	-0.4436^**
Having tap water	(0.0157)	(0.0840)
Constant	-0.0952	-1.7003^**
Constant	(0.0576)	(0.3176)
Number of observations	1,924	1,924
F test	257.08^**
R-squared	0.5473
Adj R-squared	0.5451
Wald chi-squared		199.00^**
Wald test of exogeneity		0.19

Standard errors are reported in parentheses. ^**p < 0.01, ^*p < 0.05. URRBMI indicates Urban and Rural Resident Basic Medical Insurance. IADL indicates instrumental activity of daily living. PM_2.5 indicates Particulate Matter 2.5

ISSN: 2049-3258