Table 4 Linear regression model results for waiting time
Predictors | Estimates | CI | P value |
|---|---|---|---|
(Intercept) (pre-intervention) | 40.65 | 26.57 – 54.74 |  < 0.001 |
 Group 1 (implementation) | -3.88 | -23.85 – 16.09 | 0.691 |
 Group 2 (post-intervention) | 26.81 | -10.31 – 63.92 | 0.148 |
Time | -0.40 | -2.31 – 1.52 | 0.673 |
 Time since period 1 | 3.27 | 0.11 – 6.43 | 0.043 |
 Time since period 2 | -3.42 | -9.21 – 2.38 | 0.234 |