Low S score n=99 | High S score n=99 | P value | Low P score n=99 | High P score n=99 | P value | Low rank n=99 | High rank n=99 | P value | |||||||
Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||||
Age | 67.2 | 7.0 | 64.9 | 7.7 | 0.029 | 67.3 | 6.1 | 65.5 | 7.2 | 0.051 | 68.3 | 6.3 | 64.2 | 7.30 | <0.001 |
BMI | 28.3 | 5.1 | 27.2 | 5.5 | 0.159 | 25.5 | 4.2 | 29.4 | 5.5 | <0.001 | 26.4 | 4.6 | 29.2 | 5.29 | <0.001 |
Caucasian (%) | 91.9 | 98.0 | 0.052 | 99.0 | 92.9 | 0.030 | 96.0 | 94.9 | 0.733 | ||||||
Female (%) | 74.7 | 77.8 | 0.616 | 74.7 | 84.8 | 0.077 | 71.7 | 80.8 | 0.133 | ||||||
KOOS pain | 60.2 | 19.0 | 69.2 | 18.7 | 0.001 | 82.1 | 12.5 | 51.2 | 14.9 | <0.001 | 75.9 | 16.1 | 57.9 | 18.12 | <0.001 |
KOOS ADL | 61.0 | 17.7 | 73.2 | 19.0 | <0.001 | 85.9 | 11.5 | 52.6 | 14.3 | <0.001 | 79.4 | 15.5 | 59.6 | 18.53 | <0.001 |
NRS pain | 5.2 | 2.6 | 4.2 | 2.7 | 0.006 | 2.4 | 2.0 | 6.7 | 2.0 | <0.001 | 3.2 | 2.5 | 5.6 | 2.57 | <0.001 |
KL (%) | 0.028 | 0.347 | 0.106 | ||||||||||||
0 | 14.4 | 22.2 | 23.2 | 13.4 | 19.4 | 16.2 | |||||||||
1 | 25.8 | 33.3 | 37.4 | 36.1 | 34.7 | 37.4 | |||||||||
2 | 33.0 | 32.3 | 28.3 | 33.0 | 22.4 | 30.3 | |||||||||
3 | 20.6 | 12.1 | 10.1 | 16.5 | 17.3 | 16.2 | |||||||||
4 | 6.2 | 1.0 | 1.0 | 6.1 | 0.0 | ||||||||||
minJSW | 1.6 | 1.05 | 3.6 | 0.86 | <0.001 | 3.0 | 1.10 | 2.3 | 1.07 | <0.001 | 2.1 | 1.23 | 3.08 | 1.12 | <0.001 |
Osteophytes | 20.2 | 19.6 | 20.4 | 18.0 | 0.947 | 14.8 | 10.8 | 19.8 | 16.2 | 0.012 | 18.1 | 19.3 | 21.6 | 19.3 | 0.203 |
Subchondral bone density | 31.9 | 4.7 | 30.4 | 5.1 | 0.037 | 29.3 | 4.2 | 32.0 | 5.0 | <0.001 | 29.5 | 4.2 | 31.5 | 5.5 | 0.004 |
Continuous variables are reported as mean±SD, and t-test p value. Categorical variables are presented as percentages for each category and χ2 p value. Significant p-values (<0.05) are indicated in bold.
ADL, Activities of Daily Living; K&L, Kellgren and Lawrence; KOOS, Knee Injury and Osteoarthritis Outcome Score; minJSW, minimum Joint Space Width; NRS, Numeric Rating Scale.