Table 2.

Characteristics of counties in which the hospitals included in the study are located.

County characteristics	Control group (n = 62)	Intervention group (n = 37)	t	p value
Population (ten thousand)	88.87 ± 31.92	96.22 ± 33.42	1.185	0.127
GDP per capita (RMB)	69912.75 ± 42898.00	88462.90 ± 32397.14	2.414	0.017
Per capita disposable income of urban residents (RMB)	29564.50 ± 8307.11	33899.36 ± 7264.85	2.815	0.006
Per capita disposable income of rural residents (RMB)	11870.06 ± 4926.92	12896.46 ± 3853.59	1.244	0.217