Table 2. Descriptive statistics of respondent characteristics.

Demographic variable		Size	%
Gender	Male	99	46.92
	Female	112	53.08
Age	< = 20 years old	1	0.47
	21–30 years old	83	39.34
	31–40 years old	88	41.71
	40–50 years old	31	14.69
	>50 years old	8	3.79
Personal Income (RMB)	< = 3,000	16	7.58
	3,001–5,000	58	27.49
	5,001–8,000	83	39.34
	> 8,001	54	25.59
Occupation	A government office/institution, etc.	21	9.95
	Enterprise staff	161	76.30
	Individual occupation	13	6.16
	Student	11	5.21
	Others	5	2.37