Table 1.

Characteristics of the study sample

Characteristic	Group	2014		2018
		Number/ Mean	%/S.D	Number/ Mean	%/S.D
Subjective Well-being	0–6	1555	31.1	1580	31.6
	7–10	3442	68.9	3417	68.4
Age	45–59	3196	64.0	2458	49.2
	60–74	1665	33.3	2230	44.6
	≥ 75	136	2.72	309	6.2
registered residence	urban	2327	46.6	2470	49.4
	rural	1670	53.4	2527	50.6
education status	primary school and below	2845	56.9	3289	65.8
	junior high school	1078	21.6	1086	21.7
	Senior high school	506	10.1	506	10.1
	college or university degree and above	568	11.4	116	2.4
marital status	Married	4439	88.8	4256	85.2
	unmarried	558	11.2	741	14.8
SRH	very good	415	8.3	474	9.5
	good	721	14.4	456	9.1
	acceptable	1707	34.2	1804	36.1
	bad	936	18.7	846	16.9
	very bad	1218	24.4	1417	28.6
chronic disease	Yes	1340	26.8	1448	29.0
	No	3657	73.2	3549	71.0
hospitalization	Yes	679	13.6	960	19.2
	No	4318	86.4	4037	80.8
two-week morbidity	Yes	2148	43.0	2219	44.4
	No	2849	57.0	2778	55.6
Physical exercise	Yes	1941	38.8	2636	52.7
	No	3056	61.2	2361	47.3
Drinking status	Yes	170	3.4	183	3.7
	No	4827	96.6	4814	96.3
Smoking status	Yes	232	4.6	225	4.5
	No	4765	95.4	4772	95.5
Working situation	Yes	3348	67.0	3035	60.7
	No	1649	33.0	1962	39.3
BMI	obesity	368	7.4	319	6.3
	overweight	2663	53.3	2495	50.0
	normal weight	1562	31.2	1704	34.1
	underweight	404	8.1	479	9.6
Income status		2.50	± 1.06	3.02	± 1.16
Social status		3.08	± 1.04	3.31	± 1.14