TABLE 3.
Ceiling and Floor Effectsa
| Baseline | 6 Weeks | 6 Months | 2 Years | |||||
|---|---|---|---|---|---|---|---|---|
| Ceiling | Floor | Ceiling | Floor | Ceiling | Floor | Ceiling | Floor | |
| EQ-5D | 4 (2.9) | 0 (0.0) | 13 (9.4) | 0 (0.0) | 41 (29.5) | 0 (0.0) | 50 (45.1) | 0 (0.0) |
| MARS | 65 (46.8) | 7 (5.0) | 61 (43.9) | 11 (7.9) | 42 (30.2) | 17 (12.2) | 18 (16.2) | 10 (9.0) |
| KOOS-ADL | 6 (4.3) | 0 (0.0) | 5 (3.6) | 1 (0.7) | 53 (38.1) | 0 (0.0) | 50 (45.1) | 0 (0.0) |
| KOOS-sport | 3 (2.2) | 16 (11.5) | 14 (10.1) | 10 (7.2) | 18 (13.0) | 0 (0.0) | 30 (27.0) | 1 (0.9) |
| KOOS-QOL | 3 (2.2) | 13 (9.4) | 0 (0.0) | 2 (1.4) | 3 (2.2) | 1 (0.7) | 18 (16.2) | 0 (0.0) |
| SF-36 PF | 13 (9.4) | 1 (0.7) | 0 (0.0) | 1 (0.7) | 14 (10.1) | 0 (0.0) | 46 (41.4) | 0 (0.0) |
| SF-36 pain | 5 (3.6) | 0 (0.0) | 5 (3.6) | 0 (0.0) | 35 (25.2) | 0 (0.0) | 46 (41.4) | 0 (0.0) |
| PROMIS PF CAT | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 2 (1.4) | 0 (0.0) | 10 (9.0) | 0 (0.0) |
aData are shown as n (%). ADL, activities of daily living; EQ-5D, EuroQol–5 dimensions questionnaire; 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.