Table 1.

Socio-demographic Characteristics of the Sample.

		Frequency	Percentage
Age (mean = 49.68, SD = 18.66)	18–30	87	15.3
	31–45	181	31.8
	46–60	143	25.1
	Above 60	158	27.8
Gender	Male	276	48.5
	Female	293	51.5
Monthly household disposable income (CNY)	<6000	167	29.3
	6000–9999	171	30.0
	10,000–19,999	166	29.2
	>20,000	65	11.4
Employment status	Employed	357	62.7
	Unemployed	52	9.1
	Retired	160	28.1
Residential Area	Within 1st ring road	128	22.5
	Between 1st and 2nd ring road	194	34.1
	Between 2nd and 3rd ring road	183	32.2
	Outside 3rd ring road	64	11.2
Car Ownership	Car Owner	249	43.8
	Non-car owner	320	56.2