Table 4. Outpatient services: description of dependent variable in the linear regression models.

	Sample	Per-visit outpatientexpense (CNY)	Per-visit drugexpense (CNY)	Proportion (%)
2010	1007	166.79	99.10	59.41
2011	1007	150.26	81.73	54.40
Total	2014	158.53	90.42	57.04