Table 3 Summary of the substitution of policy-related drugs

1

Yes

High

Complete substitution

Bid-non-winning brands were only or partially used before policy intervention, while only bid-winning brands were used after policy intervention

6.82%

43.18%

2

Middle

Partial substitution

Utilization volume of bid-winning brands increased after policy intervention, progressively substituting for bid-non-winning brands

36.36%

3

No

No substitution

①Bid-winning brands were used both before and after policy intervention, brand selection did not change while dddc and ddds changed;

②DDDc of bid-non-winning brands decreased after policy intervention, medical institutions did not raise the proportion of bid-winning brands

40.90%

40.90%

4

Alternation of varieties

Policy-related drugs came into use after policy intervention

Policy-related drugs were not used before policy intervention and came into use after policy intervention

9.09%

15.91%

5

Policy-related drugs no longer used after policy intervention

Policy-related drugs were no longer used after policy intervention

6.82%