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. 2022 Oct 22;15:68. doi: 10.1186/s40545-022-00466-4

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