Table 5

Multiple regression analysis of the association between the Knee Injury and Osteoarthritis Outcome Score subscales* and the Kellgren and Lawrence grades

Knee Injury and Osteoarthritis Outcome ScoreNoKellgren and Lawrence gradesβSE95% CIp Value
Pain972−0.62.0−4.5 to 3.30.77
4032.62.6−2.4 to 7.80.30
114−14.34.3−22.9 to −5.80.001
Other symptoms972−4.12.2−8.4 to 0.20.06
4033.92.9−1.7 to 9.50.17
114−11.64.9−21.3 to −2.10.02
Activities of daily living972−0.41.4−3.2 to 2.40.80
4033.41.8−0.2 to 7.00.06
114−7.33.2−13.4 to −1.10.02
Function in sports and recreation972−1.13.4−7.8 to 5.50.74
4033.24.4−5.4 to 11.80.46
114−20.67.4−35.2 to −6.00.006
Knee-related quality of life9722.83.1−3.2 to 8.90.36
4031.24.0−6.6 to 9.10.76
114−20.76.6−33.9 to −7.50.002
  • * Adjusted for gender, age and body mass index. Kellgren and Lawrence grades 0 and 1 constitute the reference category for the independent dichotomous variables (n=60).