Table 2 Interrupted time series analysis results for utilization of antibiotics under price control
Variable | MODEL 1 | MODEL 2 | MODEL 3 | |||
|---|---|---|---|---|---|---|
Coefficient | p value (95%CI) | Coefficient | p value (95%CI) | Coefficient | p value (95%CI) | |
Time | 0.004 | 0.000 (0.003–0.005) | 0.005 | 0.000 (0.002–0.007) | 0.81 | 0.045 (0.001–0.161) |
Intervention (level change) | − 0.008 | 0.809 (− 0.059–0.076) | − 0.037 | 0.517 (− 0.152–0.077) | − 5.795 | 0.000 (− 8.243– − 3.347) |
Time after intervention (trend change) | − 0.003 | 0.002 (− 0.005–− 0.001) | − 0.003 | 0.100 (− 0.007–0.000) | 0.095 | 0.257 (0.070–0.262) |
Seasonal dummy | 0.208 | 0.000 (0.169–0.247) | 0.125 | 0.000 (0.083–0.167) | ||
Const. | 19.63 | 0.000 (19.593–19.683) | 19.63 | 0.000 (19.46–19.71) | 43.13 | 0.000 (39.806–46.460) |
Number of observations | 112 (pre-intervention: 65 and post-intervention: 47) | 112 (pre-intervention: 65 and post-intervention: 47) | 112 (pre-intervention: 65 and post-intervention: 47) | |||
R2 | 0.7208 | 0.987 | 0.625 | |||