Table 2 Mean KOOS scores (0 to 100, worst to best scale) at test and retest administrations one week apart, test-retest reliability, internal consistency and minimal detectable change of KOOS subscales for individuals and groups 1.3 year after anterior cruciate ligament reconstruction (ACLR)
KOOS subscales (number of items) | Mean KOOS score (SD) | ICC (95% CI) | Cronbach’s alpha coefficients | SEM | Minimal detectable change (95% CI) in individuals | Minimal detectable change (95% CI) in groups | |
|---|---|---|---|---|---|---|---|
First follow-up assessment | Second follow-up assessment | ||||||
ACLR, n = 72 | |||||||
Pain (9) | 88.1 (13.4) | 87. 7 (13.9) | 0.86 (0.84–0.88) | 0.92 | 5.1 (4.6–5.4) | 14.1 (12.9–14.9) | 1.7 (1.6–1.8) |
Symptoms (7) | 81.9 (16.9) | 82.2 (16.4) | 0.90 (0.89–0.92) | 0.95 | 5.2 (4.8–5.6) | 14.5 (13.3–15.6) | 1.7 (1.5–1.8) |
ADL (17) | 92.1 (12.1) | 92.1 (11.9) | 0.89 (0.88–0.91) | 0.94 | 3.9 (3.6–4.2) | 10.9 (10.1–11.6) | 1.3 (1.2–1.4) |
Sports/Rec (5) | 72.0 (24. 9) | 71.5 (26.2) | 0.93 (0.91–0.94) | 0.96 | 6.8 (6.1–7.5) | 18.8 (16.9–20.7) | 2.2 (2.0–2.4) |
QOL (4) | 63.8 (23.1) | 65.4 (22.4) | 0.90 (0.88–0.92) | 0.95 | 7.3 (6.5–8.0) | 20.2 (18.1–22.2) | 2.4 (2.1–2.6) |