Table 4 The results of interrupted time series analysis for expenditures (million CNY)
Categories | Constant β0(Yt0) | Secular trend β1(Yt1) | Level change β2(Yt2) | Trend change β3(Yt3) |
|---|---|---|---|---|
Drugs under the same generic name | ||||
Bid-winning drugs | 8.21*** (9.84) | 0.08 (8.71) | 9.57*** (16.76) | 0.34 (21.25) |
Generic drugs | 41.80*** (44.71) | -0.21 (40.37) | -33.00*** (12.90) | 0.65 (8.70) |
Branded drugs | 54.40*** (55.95) | -0.09 (53.30) | -35.50*** (25.96) | 0.03 (18.31) |
Total | 102.00*** (110.49) | 0.27 (103.00) | -48.20** (69.05) | -1.17 (48.63) |
Alternative drugs under different generic names | ||||
Perfect clinical equivalence | 4.28*** (5.40) | 0.01 (4.35) | 0.37 (5.44) | 0.03 (5.04) |
Fundamental clinical equivalence | 8.12*** (8.42) | 0.03 (8.25) | -0.81 (10.33) | 0.21 (9.05) |
Limited clinical equivalence | 23.70*** (25.76) | 0.67* (27.69) | -5.05 (35.72) | 0.56 (34.39) |
Total | 36.00*** (39.59) | 0.73 (40.29) | -5.52 (51.50) | 0.77 (48.48) |