Table 2:
Comparative timed distribution of mean values (± standard deviation) of postoperative pain at rest
| Time point | Study group | n | Control group | n | P-value |
|---|---|---|---|---|---|
| Hours | |||||
| 6 | 0.9 ± 0.7 (2,0) | 25 | 3.00 ± 1.00 (5,2) | 25 | <10−4 |
| 12a | 0.8 ± 0.55 (2,0) | 18 | 2.4 ± 0.5 (3,2) | 15 | <10−4 |
| 18 | 0.8 ± 0.5 (2,0) | 25 | 2.5 ± 0.9 (5,2) | 25 | <10−4 |
| 24 | 0.6 ± 0.6 (2,0) | 25 | 2.45 ± 1.2 (6,1) | 25 | <10−4 |
| 36a | 0.4 ± 0.5 (1,0) | 10 | 2.6 ± 1.1 (4,1) | 7 | 0.002 |
| 48 | 0.5 ± 0.5 (1,0) | 25 | 2.1 ± 0.95 (5,1) | 25 | <10−4 |
| 60a | 0.1 ± 0.35 (1,0) | 8 | 1.6 ± 0.5 (2,1) | 9 | <10−4 |
| 72 | 0.4 ± 0.5 (1,0) | 25 | 1.6 ± 0.8 (4,1) | 25 | <10−4 |
| 84a | 0.1 ± 0.3 (1,0) | 9 | 1.3 ± 0.7 (2,0) | 10 | <10−4 |
| 96 | 0.25 ± 0.4 (1,0) | 25 | 1.4 ± 0.7 (3,0) | 25 | <10−4 |
| Days | |||||
| 5 | 0.2 ± 0.4 (1,0) | 25 | 1.4 ± 0.7 (3,0) | 25 | <10−4 |
| 6 | 0.2 ± 0.4 (1,0) | 25 | 1.3 ± 0.6 (3,0) | 25 | <10−4 |
| 7 | 0.1 ± 0.3 (1,0) | 25 | 1.2 ± 0.6 (3,0) | 25 | <10−4 |
| 14 | 0.04 ± 0.2 (1,0) | 25 | 1.2 ± 1.0 (3,0) | 25 | <10−4 |
| 30 | 0.0 ± 0.0 (0,0) | 25 | 1.0 ± 1.1 (3,0) | 25 | <10−4 |
| 60 | 0.0 ± 0.0 (0,0) | 25 | 0.25 ± 0.45 (1,0) | 25 | 0.01 |
aOnly awake patients were evaluated for pain during night hours, (−,−): maximum and minimum values of the verbal analogue scale of pain at rest recorded.