Table 2. Characteristics of the Study Population by Sex.

Variable	Male*		Female†		p value
	N	Proportion	N	Proportion
Age					<0.001
Mean±95% CI	72.27±0.11	0.423	73.35±0.10	0.578
Marital status					<0.001
Married	19983	0.870	14252	0.430
Unmarried	2819	0.130	18600	0.570
NBLA recipients					<0.001
No	21699	0.954	30153	0.921
Yes	1103	0.046	2699	0.079
Sleep duration					<0.001
5 hr or less	4102	0.191	8539	0.283
6 hr	5518	0.264	8050	0.252
7 hr	6047	0.262	8019	0.234
8 hr or more	7135	0.283	8244	0.231
Hypertension					<0.001
No	12620	0.526	15429	0.463
Yes	10182	0.474	17423	0.537
Diabetes mellitus					0.344
No	18743	0.804	26901	0.804
Yes	4059	0.196	5951	0.196
Dyslipidemia					<0.001
No	20412	0.864	28498	0.827
Yes	2390	0.136	4354	0.173
Stress level					<0.001
Low	18809	0.813	24479	0.733
High	3993	0.187	8373	0.267
Self-rated health					<0.001
Good	6033	0.284	4727	0.159
Fair	7767	0.353	9638	0.313
Poor	9002	0.363	18487	0.527

CI, confidence interval; NBLA, National Basic Livelihood Ac; KCHS, Korean Community Health Survey.

The KCHS as a sample survey was analyzed by research subject and with applied weight calculated in production of the sample design weight and benchmark weight. Strata with single sampling unit centered at overall mean. Values are presented as sample size and weighted proportion, unless otherwise indicated.

^*Sample size=22802, weighted=2347797, ^†Sample size=32852, weighted=3208999.