Table 7. Inpatient services: the description of dependent variables in the linear regression models.

	Sample	Per-visit inpatientexpense (CNY)	Per-visit drugexpense (CNY)	Proportion (%)
Ningshan county hospital
2010	2728	3482.98	1565.12	41.71
2011	3078	3203.47	1368.07	37.58
Total	5806	3334.80	1460.66	39.52
Zhenping county hospital
2010	1711	2738.23	1088.14	35.70
2011	1722	3028.73	1216.78	35.25
Total	3433	2883.94	1152.67	35.47