Table 3. The median price ratios for essential medicines before and after NEMS in four provinces.
| Region | Median MPR | |
|---|---|---|
| Before | After | |
| Zhejiang | 4.55 | 2.05 |
| Anhui | 2.26 | 1.42 |
| Shandong | 2.07 | 1.07 |
| Ningxia | 1.07 | 0.75 |
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