Table 2.

Descriptive statistics of variables.

Variable	Observation	Mean	Standard deviation	Minimum	Maximum
Health	8,675	3.64	1.05	1	5
Binsurance	8,675	0.10	0.30	0	1
Age	8,675	50.01	16.33	19	85
Age_2	8,675	2,767.26	1668.38	361	7,225
Gender	8,675	0.48	0.50	0	1
Edu	8,675	0.34	0.47	0	1
Marriage	8,675	0.90	0.30	0	1
Household	8,675	0.42	0.49	0	1
Ln_fincome	8,675	10.34	1.76	0	13.12
Neighbor	8,675	3.46	2.02	1	7
Familysize	8,675	2.88	1.36	1	7
Sinsurance	8,675	0.94	0.24	0	1
Invest	8,675	0.91	0.28	0	1