Table 1.

Demographic data of study participants19

	China (n = 4136)	Taiwan (n = 2068)	South Korea (n = 2080)	Overall (n = 8284)
Sex
Men	50.3	48.6	47.6	49.2
Women	49.7	51.4	52.4	50.8
Age (y)
40–44	19.9	15.6	16.9	18.1
45–49	19.6	16.1	16.8	18.0
50–54	15.3	16.3	16.3	15.8
55–59	12.7	14.9	14.4	13.7
≥60	32.6	37.1	35.6	34.4
Education
High school or less	28.0	39.3	30.3	31.4
Some college	28.4	23.7	3.4	20.9
College degree/college graduate	40.2	28.2	57.0	41.4
Postgraduate	3.5	8.8	9.4	6.3
Marital status
Single	2.9	14.9	9.2	7.5
Divorced	1.5	5.2	4.0	3.0
Married/living with partner	91.7	72.8	81.6	84.5
Widow/widower	3.2	6.3	4.5	4.3
Prefer not to answer	0.8	0.7	0.7	0.7
Work status
Homemaker	2.6	12.0	22.4	9.9
Retired	28.7	16.9	6.0	20.1
Student	0.0	0.1	0.2	0.1
Working full‐time	62.6	60.0	53.9	59.8
Working part‐time	3.7	6.2	8.0	5.4
Other work for pay	0.4	0.8	3.2	1.2
Other	1.1	1.9	3.7	2.0
Unemployed	0.6	1.3	2.3	1.2
Permanently disabled/cannot work due to ill health	0.1	0.8	0.4	0.4

Data show the percentage of individuals in each group.