	Living standard	Not so good = 0	86.96	80.14	83.81
	Living standard	Good = 1	13.04	19.86	16.19
	Medical insurance	Don’t have = 0	6.57	11.37	8.77
	Medical insurance	Have = 1	93.43	88.63	91.23
	Pension	Don’t have = 0	72.9	49.4	62.12
	Pension	Have = 1	27.1	50.6	37.88
X₃	Sleep quality	Bad = 0	38.51	40.41	39.38
	Sleep quality	Good = 1	61.49	59.59	60.62
	Sleep time	(Hours)	7.926901	7.919057	(mean)
	Smoking	Yes = 0	16.48	16.32	16.41
	Smoking	No = 1	83.52	83.68	83.59
	Dinking	Yes = 0	15.15	14.68	14.93
	Dinking	No = 1	84.85	85.32	85.07
	Do exercise	No = 0	81.2	63.74	73.17
	Do exercise	Yes = 1	18.8	36.26	26.83
	Social activities	No = 0	89.02	82.23	85.88
	Social activities	Yes = 1	10.98	17.77	14.12
X₄	Regular physical examination	Yes = 1	59.63	54.77	57.38
	Regular physical examination	No = 0	40.37	45.23	42.62
	Chronic	Yes = 0	80.49	88.25	84.2
	Chronic	No = 1	19.51	11.75	15.8
X₅	Positive	No = 0	81.32	77.02	79.33
	Positive	Yes = 1	18.68	22.98	20.67
	Negative	Yes = 0	66.49	60.89	63.89
	Negative	No = 1	33.51	39.11	36.11
X₆	Care support	No = 0	41	40.53	40.78
	Care support	Yes = 1	59	59.47	59.22
	Financial support	No = 0	17.29	24.49	20.74
	Financial support	Yes = 1	82.71	75.51	79.26
	Live with	In a nursing home/alone = 0	23.06	19.88	21.59
	Live with	With household member(s) = 1	76.94	80.12	78.41