Quality of feedback in the control and trained group over time with the supervisor as the unit of analysis
| Quality of feedback (range: 11–77) | Control group | Trained group | ANOVA* |
| T0 Mean (SD) | 61.62 (0.59) | 61.68 (0.78) | F (1,164) = 0.02, p=0.89 |
| T1,2,3 Mean (SD) | 62.72 (7.52) | 66.14 (4.64) | F (1,87) = 6.76, p=0.04 |
*Controlled for hospital.
ANOVA, Analysis of Variance.