Table 1.

Basic characteristics (n=24,850)

Variables	Group	N	%
Policy	Before	12,145	48.87
	After	12,705	51.13
Demographics
Sex	Male	11,612	46.75
	Female	13,228	53.25
Age (years)	45-50	4,329	17.42
	51-60	8,594	34.58
	61-70	7,510	30.22
	≥71	4,417	17.77
Education	Illiterate	7,606	30.62
	≤Elementary school	11,238	45.25
	≥Middle school	5,992	24.13
Economic status	Low	6,147	25.01
	Middle	12,289	50.01
	High	6,139	24.98
Life style
Living status	Live with others	19,607	78.90
	Live alone	5,242	21.10
Sleeping hours	7-8 hours	8,932	35.94
	≤6 hours	12,499	50.30
	>8 hours	3,419	13.76
Smoking status	No	14,555	73.04
	Yes	5,373	26.96
Alcohol consumption	No	16,791	67.62
	Yes	8,042	32.38
Health status
Disability	No	17,341	80.97
	Yes	4,075	19.03
Body pain	No	12,807	51.54
	Yes	12,043	48.46
Chronic diseases	No	11,134	44.80
	Yes	13,716	55.20