Table 1. The demographic characteristics of the respondents.

Category		Frequency
Gender	Male	255 (51.0)
	Female	245 (49.0)
Age	19–29	91 (18.2)
	30–39	103 (20.6)
	40–49	120 (24.0)
	50–59	114 (22.8)
	60–69	72 (14.4)
Education	Middle school or below	10 (2.0)
	High school	95 (19.0)
	College in school	39 (7.8)
	College graduate	298 (59.6)
	Graduate school or above	58 (11.6)
Subjective health status	Very bad	4 (0.8)
	Bad	164 (32.8)
	Good	315 (63.0)
	Very good	17 (3.4)

Data are presented as number of persons (%).