Table 3.
Comparison of Responders and Nonresponders on Anchor Questions
| Not Missing Anchor Questions (n = 108) | Missing Anchor Questions (n = 31) | P Value | |
|---|---|---|---|
| Age (years) | 22.2 ± 8.8 | 20.7 ± 6.7 | .29 |
| Sex, M:F | 39:69 | 10:21 | .16 |
| BMI | 25.5 ± 6.0 | 26.3 ± 5.5 | .46 |
| WC | 5 (4.6%) | 2 (6.5%) | .17 |
| Smoker | 14 (13.0%) | 1 (3.2%) | .19 |
| Laterality, L:R | 71 (65.7%):37 (34.3%) | 29 (61.3%):12 (38.7%) | .62 |
| IKDC | 48.0 ± 18.2 | 45.8 ± 18.3 | .53 |
| KOOS Symptom | 63.4 ± 18.0 | 63.4 ± 17.9 | .99 |
| KOOS Pain | 67.4 ± 17.0 | 65.0 ± 20.0 | .54 |
| KOOS ADL | 76.8 ± 17.4 | 73.9 ± 19.3 | .45 |
| KOOS Sport | 35.9 ± 26.1 | 37.3 ± 26.2 | .80 |
| KOOS QOL | 27.1 ± 19.8 | 24.7 ± 16.2 | .53 |
| KOOS JR | 66.7 ± 14.4 | 64.3 ± 15.0 | .38 |
| Kujala | 57.9 ± 18.1 | 57.5 ± 19.7 | .92 |
ADL, activities of daily living; BMI, body mass index; IKDC, International Knee Documentation Committee; JR, joint replacement; KOOS, Knee Injury and Osteoarthritis Outcome Score; QOL, quality of life; WC, Workers Compensation.