Table 1. Participants' characteristics.

		Subjects(n = 5328)
		n	%
Sex	Male	2424	45.5
	Female	2904	54.5
Age	<75 year	2834	53.2
	≥75 year	2494	46.8
SCC	Non- SCC	3544	66.5
	Having SCC	1732	32.5
	Missing	52	1.0
Educational attainment	<10 year	4436	83.3
	≥10 year	751	14.1
	Missing	141	2.6
Residential status	Other	4555	85.5
	Solitary	649	12.2
	Missing	124	2.3
Self-rated health	Good	4214	79.1
	Poor	1056	19.8
	Missing	58	1.1
Employment	Worker	1448	27.2
	Non-worker	3820	71.7
	Missing	60	1.1
Alcohol status	Non-drinker	3505	65.8
	Drinker	1766	33.1
	Missing	57	1.1
Smoking status	Never	2979	55.9
	Ever	1732	32.5
	Smoker	567	10.6
	Missing	50	0.9
Medical history of hypertension	No	3065	57.5
	Yes	2263	42.5
Medical history of diabetes	No	4614	86.6
	Yes	714	13.4
Medical history of hyperlipidemia	No	4840	90.8
	Yes	488	9.2
Medical history of stroke	No	5117	96.0
	Yes	211	4.0
Depression	<5 points	2737	51.4
(Geriatric Depression Scale score)	≥5 points	1716	32.2
	Missing	875	16.4
Loss-event experience	Having experience	2063	38.7
	Did not have experiences	3155	59.2
	Missing	110	2.1
Stress	Under stress	2787	52.3
	Non-stress	2434	45.7
	Missing	107	2.0
Physical activity	<150 min/week	2451	46.3
	≥150 min/week	2467	46.0
	Missing	410	7.7
Television viewing time	<1 h/day	952	17.9
	1–2 h/day	1389	26.1
	2–3 h/day	1254	23.5
	≥3 h/day	1427	26.8
	Missing	306	5.7
Time of reading books or newspapers	<10 min/day	1094	20.5
	10–20 min/day	1240	23.3
	20–30 min/day	1173	22.0
	≥30 min/day	1458	27.4
	Missing	363	6.8