TABLE 6.
ITS results for drug expenditures in outpatient setting.
| Categories | Coef | 95% CI | p |
|---|---|---|---|
| Total drug expenditures | |||
| Level change,β2 | 31.11 | (12.45, 49.76) | 0.003** |
| Trend change,β3 | −0.74 | (-3.07, 1.60) | 0.541 |
| Durbin-Watson,d | 2.03 | ||
| Bid-winning drug expenditures | |||
| Level change,β2 | 1.31 | (1.03, 1.59) | <0.001*** |
| Trend change,β3 | 0.04 | (0.00, 0.07) | 0.049* |
| Durbin-Watson,d | 1.94 | ||
| Non-winning drug expenditures | |||
| Level change,β2 | 11.30 | (3.34, 19.27) | 0.010* |
| Trend change,β3 | −1.06 | (-2.05, −0.07) | 0.046* |
| Durbin-Watson,d | 2.10 | ||
| Non-VBP drug expenditures | |||
| Level change,β2 | 18.13 | (7.02, 29.25) | 0.004** |
| Trend change,β3 | 0.28 | (-1.13, 1.68) | 0.702 |
| Durbin-Watson,d | 2.00 | ||
Abbreviations: Coef., coefficient; SE, standard error; CI, confidence interval.
*p < 0.05, **p < 0.01, ***p < 0.001.