| Group | No. | NRS score | 6 h | 12 h | 48 h | 36 h |
| Control group | 40 | 3 points | 25 (62.5) | 20 (50.0) | 20 (50.0) | 18 (45.0) |
| 3 - 4 points | 5 (12.5) | 7 (17.5) | 15 (37.5) | 20 (50.0) | ||
| 5 points | 1 (2.5) | 2 (5.0) | 6 (15.0) | 10 (25.0) | ||
| Experimental group | 40 | 3 points | 35 (87.5) | 30 (75.0) | 28 (70.0) | 25 (62.5) |
| 3 - 4 points | 4 (10.0) | 5 (12.5) | 10 (25.0) | 15 (37.5) | ||
| 5 points | 1 (2.5) | 1 (2.5) | 3 (7.5) | 4 (10) |