Table 3 Reliability of all subscales of the KOOS
From: The Dutch version of the knee injury and osteoarthritis outcome score: A validation study
| Â | Â | Baseline mean (SD) | Retest mean (SD) | Change scores mean (SD) | SEM | ICC agreement | 95% CI |
|---|---|---|---|---|---|---|---|
Mild OA (n = 35) | Pain | 85.3 (18.5) | 89.7 (12.5) | -4.4 (9.4) | 7.2 | 0.80 | 0.60–0.90 |
|  | Symptoms | 78.6 (7.1) | 81.3 (16.8) | -2.2 (12.8) | 9.0 | 0.74 | 0.54–0.86 |
|  | ADL | 91.2 (15.1) | 93.5 (10.8) | -2.3 (7.1) | 5.2 | 0.85 | 0.71–0.92 |
|  | Sport/recreation | 71.0 (23.4) | 73.0 (22.9) | -1.7 (12.8) | 9.0 | 0.85 | 0.73–0.92 |
|  | QoL | 67.0 (21.6) | 69.6 (20.5) | -2.5 (10.3) | 7.4 | 0.88 | 0.77–0.94 |
Moderate OA (n = 53) | Pain | 62.9 (25.7) | 63.2 (23.7) | 0.0 (12.9) | 9.0 | 0.87 | 0.78–0.92 |
|  | Symptoms | 63.2 (24.4) | 66.2 (21.9) | -1.5 (11.3) | 8.0 | 0.87 | 0.79–0.92 |
|  | ADL | 69.3 (24.2) | 69.2 (23.7) | 0.6 (8.2) | 5.8 | 0.94 | 0.90–0.97 |
|  | Sport/recreation | 36.2 (32.0) | 39.7 (32.5) | -4.8 (15.9) | 11.6 | 0.87 | 0.78–0.92 |
|  | QoL | 44.6 (26.3) | 47.3 (25.4) | -2.1 (10.3) | 7.4 | 0.91 | 0.86–0.95 |
Revision of TKA (n = 47) | Pain | 61.6 (23.4) | 63.9 (21.9) | -2.3 (14.3) | 10.1 | 0.80 | 0.67–0.88 |
|  | Symptoms | 64.7 (21.5) | 62.9 (21.7) | 1.7 (10.2) | 7.2 | 0.89 | 0.81–0.94 |
|  | ADL | 56.6 (21.9) | 59.5 (22.9) | -2.9 (16.4) | 11.7 | 0.73 | 0.56–0.83 |
|  | Sport/recreation | 26.8 (34.1) | 27.4 (34.2) | -2.2 (35.1) | 24.6 | 0.45 | 0.19–0.66 |
|  | QoL | 36.6 (26.6) | 40.3 (27.5) | -3.7 (14.9) | 10.8 | 0.84 | 0.73–0.91 |