Table 2.

Descriptive Statistics ($N=6081$).

	Mean	Variance	Min	Max
social vulnerability	13.6549	9.4382	3	23
age	83.8831	100.7362	60	114
self-health rate	3.3894	0.7573	1	5
smoke	15.7709	640.1702	0	99
drink	12.6304	548.3681	0	101
exercise	9.4722	345.5731	0	99
depression	0.2003	0.2599	0	2
physical limitation	0.3265	0.5312	0	5
chronic disease	0.6227	0.8340	0	10
vegetable and fruit	2.8740	0.4720	1	4
vitamin intake	1.4769	1.2019	1	5
milk intake	2.5549	2.4272	1	5
tea intake	2.1793	2.8196	1	5
cognitive impairment	10.3247	21.9063	5	30