Table 2.
Multivariate Cox Regression: Factors Impacting the Time to Achieve MCID
| Time to Achieve MCID (Hazard Ratio, 95% CI) | ||||||||
|---|---|---|---|---|---|---|---|---|
| IKDC | KOOS JR | KOOS Pain | KOOS PS | KOOS SX | KOOS QOL | KOOS ADL | KOOS Sport | |
| Age | 1.02 (1.00-1.05)∗ | 1.03 (1.00 -1.05)∗ | ||||||
| Hypertension | 0.49 (0.24-0.98)∗ | 0.41 (0.20-0.83)∗ | 2.17 (1.05-4.50)∗ | |||||
| Medial tears | 0.33 (0.15-0.74)∗∗ | 0.26 (0.11-0.61)∗∗ | ||||||
| Discoid meniscus | 13.47 (1.06-169.76)∗ | 16.97 (1.31-219.49)∗ | ||||||
| Longitudinal tear | 6.41 (1.67-24.71)∗∗ | |||||||
| Root tear | 0.34 (0.12 –0.96)∗ | |||||||
| Flap tear | 0.46 (0.23-0.95)∗ | |||||||
| Complex tear | 1.88 (1.00-3.51)∗ | 2.04 (1.14-3.65)∗ | ||||||
| Subsequent injection | 0.52 (0.28-0.98)∗ | |||||||
| Subsequent procedure | 0.44 (0.20-0.96)∗ | 0.34 (0.18-0.67)∗∗ | 0.36 (0.17 -0.79) ∗ | |||||
| Preoperative score | 0.98 (0.97-0.99)∗∗ | 0.98 (0.96 - 0.99) ∗∗ | ||||||
NOTE. The following variables were found to be insignificant on Cox regression and were thus excluded from the table above: sex, worker’s compensation, BMI, smoking, diabetes, thyroid, preoperative score, pre-existing arthritis, lateral tear, bucket handle tear, oblique tear, transverse tear, horizontal tear, chondroplasty
ADL, activities of daily living; BMI, body mass index; IKDC: International Knee Documentation Committee Score; JR, joint replacement; KOOS, Knee Injury and Osteoarthritis Outcome Score; MCID, minimally clinically important difference; PS, Physical Function Short Form; QOL, quality of life; Sx, symptoms.
Denotes P <0.05.
Denotes P < 0.01; cells left blank denote nonsignificant relationships.