From: Effects of the National Essential Medicine System in reducing drug prices: an empirical study in four Chinese provinces
2010 price (in Chinese yuan)
N
Changes in the prices (%)
Changes in the sales (%)
p-value
0-
4189
−51.8
0
<0.01
2-
4420
−32.4
0.1
10-
1404
−23.6
15.6
20-
975
−16.3
20.5