Functional Measure | OKS (mean, SD) | Difference (95% CI) | P -value* | |
---|---|---|---|---|
 |  > 16 (n = 2119) |  ≤ 16 (n = 957) |  |  |
Preoperative OKS | 24.8 (5.7) | 11.7 (3.4) | 13.1 (12.7 to 13.5) |  < 0.001 |
Postoperative OKS | 38.4 (8.0) | 32.2 (10.5) | 6.2 (5.5 to 6.9) |  < 0.001 |
Difference | 13.6 (8.4) | 20.5 (10.5) | 6.9 (6.2 to 7.6) |  < 0.001 |
P -value** |  < 0.001 |  < 0.001 |  |  |
Preoperative EQ-5D | 0.575 (0.231) | 0.169 (0.268) | 0.406 (0.387 to 0.424) |  < 0.001 |
Postoperative EQ-5D | 0.818 (0.204) | 0.667 (0.286) | 0.150 (0.133 to 0.168) |  < 0.001 |
Difference | 0.242 (0.277) | 0.499 (0.340) | 0.257 (0.234 to 0.280) |  < 0.001 |
P -value** |  < 0.001 |  < 0.001 |  |  |
Satisfaction | 87.8 (16.9) | 83.7 (19.5) | 4.2 (2.8 to 5.6) |  < 0.001 |