Table 4.

The demographic characteristic of participants.

Variables	Categories	Sample Size	Percentage (%)
Gender	Male	144	48.32
	Female	154	51.68
Age	Under 18	2	0.67
	18–25	76	25.50
	26–45	164	55.03
	45–60	36	12.08
	Above 60	20	6.72
Education	Elementary school	10	3.36
	Middle school	38	12.75
	High school	104	34.90
	Junior collage	82	27.52
	University	56	18.79
	Postgraduate	8	2.68
Family size	1	2	0.67
	2	24	8.05
	3	118	39.60
	4	36	12.08
	More than 5	118	39.60
Yearly family income	Under ¥30 thousand 1	26	8.73
	¥30–60 thousand	40	13.42
	¥60–100 thousand	102	34.23
	¥100–150 thousand	74	24.83
	Above ¥150 thousand	56	18.79

¹ ¥ is CNY, 1 CNY is equal to 0.145 USD.