| Wilcoxon significant level | After | Before | Stage group |
| Mean (±SD) | Mean (±SD) | ||
| <0.001 | 6.33 (±7.66) | 8.52 (±9.55) | Multimedia |
| >0.9 | 7.99 (±8.79) | 7.98 (±8.65) | Control |
| 0.26 | 0.72 | Mann-Whitney significant level |