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Table 6 Subgroup analyses on the impacts of DDDc

From: The impact of the national volume-based procurement policy on the use of policy-related drugs in Nanjing: an interrupted time-series analysis

Categories

Drugs under the same generic name

Alternative drugs

Bid-winning

Generic

Branded

Total

Perfect

Fundamental

Limited

Total

ATC-C

 Level change

-1.89***

-1.02***

-1.23***

-1.18***

-0.05**

-0.16***

-0.01

-0.11***

 Trend change

-0.07*

0.031*

-0.00

-0.02

0.01**

-0.00

-0.01

-0.00

ATC-N

 Level change

-11.53***

-4.83***

-3.35***

-3.83***

0.12

0.026

-0.07

0.30*

 Trend change

-0.36**

-0.22

-0.07**

-0.28

-0.22**

-0.00

0.12

0.01

ATC-J

 Level change

-14.14***

-3.97***

-3.75***

-4.23***

-0.10

-0.22*

-1.49

-0.68

 Trend change

-0.04

-0.06

-0.00

-0.16*

-0.01

-0.01

-0.11

-0.05

ATC-L

 Level change

-4.02

-46.79***

-5.36

-10.51

-

-47.14***

3.42*

-13.29***

 Trend change

6.06*

0.74

11.16***

6.23***

-

0.22

0.39

0.33

Others

 Level change

-14.96***

-3.13***

-3.67***

-5.27***

-

-

6.94

6.94

 Trend change

0.12*

0.11***

-0.19

-0.15

-

-

0.84

0.84

  1. ***p-value < 0.001
  2. **p-value < 0.01
  3. *p-value < 0.05
  4. “Others” included ATC-A, ATC-B, ATC-M and ATC-R, due to the number of drugs in these categories extremely low