Residential Environment Induced Preference Heterogeneity for River Ecosystem Service Improvements: A Comparison between Urban and Rural Households in the Wei River Basin, China

Table 4

Sociodemographics of the respondents.

Variable	Pooled sample		Urban households		Rural households
	Mean	Std. Dev.	Mean	Std. Dev.	Mean	Std. Dev.
Gender (male = 1, female = 0)	0.58	0.49	0.45	0.50	0.69	0.46
Age (years)	42.26	13.20	36.53	11.76	47.25	12.20
Education	2.89	1.22	3.66	1.12	2.24	0.89
Household size	4.32	2.38	3.78	1.24	4.79	2.96
Household income (thousand CNY per year)	53.97	55.08	65.03	64.70	44.51	43.14
Sample size,	900		427		473

Note: educational level of head of household was measured in 5 categories: (1) primary school or below; (2) junior middle school; (3) senior high school; (4) junior college; (5) bachelor degree or above.