TABLE II.
Pairwise Comparisons of Outcome Variables*
| Variable | PA Compared with IA | PA Compared with IA+PA | IA+PA Compared with IA | |||
|---|---|---|---|---|---|---|
| Mean Diff. (95% CI) | Adjusted P Value† | Mean Diff. (95% CI) | Adjusted P Value† | Mean Diff. (95% CI) | Adjusted P Value† | |
| Pain at rest 3 hr postop. | 0.41 (−0.37 to 1.19) | 0.566 | 0.41 (−0.37 to 1.19) | 0.660 | 0 (−0.78 to 0.78) | 1.000 |
| Pain at rest 6 hr postop. | −2.29 (−3.09 to −1.50) | 0.002 | −1.31 (−2.11 to −0.52) | 0.003 | −0.98 (−1.77 to −0.19) | 0.747 |
| Pain at rest 24 hr postop. | −1.63 (−2.49 to −0.77) | 0.002 | −1.69 (−2.55 to −0.83) | 0.003 | 0.059 (−0.78 to 0.90) | 1 |
| Pain at rest 48 hr postop. | −1.72 (−2.42 to −1.03) | 0.002 | −1.22 (−1.91 to −0.52) | 0.003 | −0.51 (−1.20 to 0.18) | 0.496 |
| Pain during activity 3 hr postop. | 0.51 (−0.1 to 1.12) | 0.156 | 0.49 (−0.12 to 1.10) | 0.242 | 0.02 (−0.59 to 0.63) | 1 |
| Pain during activity 6 hr postop. | −2.27 (−3.08 to −1.47) | 0.002 | −1.43 (−2.24 to −0.62) | 0.003 | −0.84 (−1.65 to −0.04) | 0.148 |
| Pain during activity 24 hr postop. | −1.35 (−2.20 to −0.51) | 0.002 | −1.55 (−2.39 to 0.70) | 0.003 | 0.2 (−0.65 to 1.04) | 1 |
| Pain during activity 48 hr postop. | −1.37 (−2.13 to −0.62) | 0.002 | −0.94 (−1.70 to −0.18) | 0.024 | −0.43 (−1.19 to 0.32) | 0.775 |
| Active flexion 3 hr postop. (°) | 4.71 (−4.73 to 14.14) | 0.580 | 8.23 (−1.20 to 17.67) | 0.212 | −3.53 (−12.96 to 5.90) | 1 |
| Passive flexion 3 hr postop. (°) | 3.43 (−3.94 to 10.80) | 0.600 | −2.06 (−9.43 to 5.31) | 0.934 | 5.49 (−1.88 to 12.86) | 0.496 |
| Active flexion 6 hr postop. (°) | 17.16 (7.25 to 27.06) | 0.002 | 5.39 (−4.52 to 15.30) | 0.660 | 11.76 (1.86 to 21.67) | 0.075 |
| Passive flexion 6 hr postop. | 14.31 (5.50 to 23.12) | 0.002 | 3.82 (−4.99 to 12.63) | 0.802 | 10.49 (1.68 to 19.30) | 0.075 |
| Active flexion 24 hr postop. (°) | 12.94 (3.59 to 22.29) | 0.005 | 7.65 (−1.70 to 17.00) | 0.242 | 5.29 (−4.06 to 14.65) | 0.775 |
| Passive flexion 24 hr postop. (°) | 8.82 (1.30 to 16.34) | 0.026 | 7.06 (−0.46 to 14.58) | 0.167 | 1.76 (−5.75 to 9.28) | 1 |
| Active flexion 48 hr postop. (°) | 6.08 (−0.31 to 12.47) | 0.097 | 1.18 (−5.21 to 7.56) | 0.960 | 4.90 (−1.48 to 11.29) | 0.496 |
| Passive flexion 48 hr postop. (°) | 4.70 (−0.66 to 10.08) | 0.139 | 1.96 (−3.41 to 7.33) | 0.870 | 2.74 (−2.62 to 8.11) | 0.838 |
*
PA = periarticular, IA = intra-articular, IA+PA = combined intra-articular and periarticular, and CI = confidence interval.
†
P values were adjusted using the Benjamini-Hochberg method to control the false-discovery rate.