TABLE 2.
Spearman Correlation Coefficients Between PROMIS PF CAT and Traditional Knee and General Health Instrumentsa
| Instrument | Baseline | 6 Weeks | 6 Months | 2 Years |
|---|---|---|---|---|
| SF-36 PF | 0.75 (P < .01) | 0.80 (P < .01) | 0.77 (P < .01) | 0.72 (P < .01) |
| SF-36 GH | 0.16 (P = .05) | 0.34 (P < .01) | 0.32 (P < .01) | 0.43 (P < .01) |
| KOOS-ADL | 0.70 (P < .01) | 0.63 (P < .01) | 0.64 (P < .01) | 0.57 (P < .01) |
| KOOS-sport | 0.69 (P < .01) | 0.32 (P < .01) | 0.57 (P < .01) | 0.67 (P < .01) |
| KOOS-QOL | 0.52 (P < .01) | 0.58 (P < .01) | 0.58 (P < .01) | 0.61 (P < .01) |
| MARS | 0.01 (P = .88) | 0.00 (P = .42) | 0.24 (P < .01) | 0.42 (P < .01) |
| EQ-5D | 0.71 (P < .01) | 0.68 (P < .01) | 0.60 (P < .01) | 0.60 (P < .01) |
aADL, activities of daily living; EQ-5D, EuroQol–5 dimensions questionnaire; GH, general health; KOOS, Knee injury and Osteoarthritis Outcome Score; MARS, Marx Activity Rating Scale; PF, physical function; PROMIS PF CAT, Patient-Reported Outcomes Measurement Information System physical function computer adaptive test; QOL, quality of life; SF-36, Short Form–36 Health Survey.