Table 2.
Comparison of primary and secondary outcomes.
| Treated | Control | t-statistic | P value | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| Pain before operation | 54.3 | 9.4 | 55.4 | 9.3 | −1.277 | 0.207 |
| Pain at postanaesthesia care unit | 27.2 | 3.8 | 26.7 | 4.1 | 0.864 | 0.391 |
| Rest pain 6 h after operation | 31.0 | 4.9 | 31.0 | 4.1 | −0.086 | 0.932 |
| Rest pain 12 h after operation | 33.3 | 5.3 | 33.1 | 5.5 | 0.465 | 0.643 |
| Rest pain 24 h after operation | 34.2 | 6.5 | 34.3 | 6.5 | −0.261 | 0.795 |
| Rest pain 48 h after operation | 33.1 | 8.4 | 34.1 | 6.7 | −1.609 | 0.113 |
| Rest pain 72 h after operation | 34 | 7.4 | 34 | 6.23 | 0 | 1 |
| Motion pain 6 h after operation | 47.4 | 5.1 | 47.5 | 4.4 | −0.21 | 0.835 |
| Motion pain 12 h after operation | 49.1 | 5.0 | 49.6 | 4.4 | −0.704 | 0.484 |
| Motion pain 24 h after operation | 50.25 | 4.994 | 50.83 | 4.618 | −0.943 | 0.35 |
| Motion pain 48 h after operation | 49.6 | 6.1 | 51.1 | 5.9 | −2.809 | 0.007 |
| Motion pain 72 h after operation | 49.3 | 4.9 | 49.8 | 4.8 | −0.925 | 0.359 |
| Thigh skin temperature (°C) before operation | 36.4 | 0.18 | 36.5 | 0.20 | −1.876 | 0.066 |
| Thigh skin temperature (°C) 24 h after operation | 38.1 | 0.27 | 38.2 | 0.29 | −2.22 | 0.03 |
| Thigh skin temperature (°C) 48 h after operation | 38.1 | 0.22 | 38.2 | 0.26 | −2.367 | 0.021 |
| Thigh skin temperature (°C) 72 h after operation | 38.1 | 0.24 | 38.1 | 0.22 | −1.867 | 0.067 |
| Thigh circumference before operation (cm) | 41.20 | 3.68 | 41.08 | 3.68 | 1.45 | 0.152 |
| Thigh circumference (cm) 24 h after operation | 42.26 | 3.76 | 42.17 | 3.64 | 1.096 | 0.277 |
| Thigh circumference (cm) 48 h after operation | 42.72 | 3.68 | 42.52 | 3.62 | 2.429 | 0.018 |
| Thigh circumference (cm) 72 h after operation | 42.92 | 3.58 | 42.78 | 3.63 | 1.756 | 0.084 |
| Ratio of the thigh girth 24 h after operation | 0.025 | 0.014 | 0.027 | 0.014 | −0.779 | 0.439 |
| Ratio of the thigh girth 48 h after operation | 0.037 | 0.017 | 0.036 | 0.016 | 0.826 | 0.412 |
| Ratio of the thigh girth 72 h after operation | 0.042 | 0.018 | 0.042 | 0.019 | 0.199 | 0.843 |
| Clinical score before operation | 35.4 | 3.6 | 36.0 | 3.2 | −1.415 | 0.162 |
| Clinical score 3 months after operation | 89.2 | 3.8 | 89.0 | 3.6 | 0.379 | 0.706 |
| Range of motion (°) 5 days after operation | 94.4 | 3.6 | 94.6 | 3.5 | −0.244 | 0.808 |
| Range of motion (°) 3 months after operation | 116.5 | 4.8 | 116.8 | 4.7 | −0.444 | 0.659 |
| Drainage 1 day after operation (mL) | 187.5 | 114.6 | 166.6 | 112.4 | 1.273 | 0.208 |
| Total drainage (mL) | 327.8 | 133.7 | 306.0 | 122.7 | 1.321 | 0.192 |
| Tourniquet time (min) | 87.0 | 12.2 | 88.2 | 13.5 | −0.873 | 0.230 |