Quality of feedback in the control and trained group over time on with feedback form as the unit of analysis
| Quality of feedback (range: 11–77) | Control group | Trained group | T-tests |
| T0 Mean (SD) | 61.47 (8.88) | 60.79 (8.25) | t(824)=1.13, p=0.62 |
| T1 Mean (SD) | 63.73 (8.63) | 65.65 (5.79)* | t(46)=−9.20, p=0.36 |
| T2 Mean (SD) | 60.94 (8.62) | 64.74 (7.53)* | t(91)=−2.23, p=0.03 |
| T3 Mean (SD) | 64.24 (9.31) | 67.13 (6.50)* | t(85)=−1.70, p=0.06 |
| ANOVA† | F (4,442) = 1.59, p=0.19 | F (4,629) = 7.20, p=0.00 |
*Post hoc Bonferroni tests with significant differences compared with T0 (α=0.05).
†Controlled for hospital.
ANOVA, Analysis of Variance.