Table 3 Preoperative and postoperative OKS in patients with and without a change greater than the MCID from 6 to 12 months
OKS (mean, SD) | Change greater than MCID | Difference (95% CI) | P value* | |
|---|---|---|---|---|
Yes (n = 381) | No (n = 1193) | |||
Preoperative | 21.1 (7.6) | 21.3 (7.8) | 0.2 (−0.7 to 1.1) | 0.694 |
6 Months postoperative | 30.4 (7.9) | 36.7 (8.9) | 6.2 (5.2 to 7.2) | < 0.001 |
12 Months postoperative | 38.8 (7.4) | 35.4 (10.1) | 3.4 (2.3 to 4.5) | < 0.001 |