Table 4.
Floor and ceiling effects for knee outcome survey activities of daily living factors
| KOS-ADL factors | Floor effect (%) | Ceiling effect (%) | |
|---|---|---|---|
| ADL1 | Pain | 5.4 | 3.8 |
| ADL2 | Stiffness | 15.4* | 3.1 |
| ADL3 | Swelling | 34.6* | 3.8 |
| ADL4 | Giving way, buckling, or shifting of the knee | 27.7* | 3.1 |
| ADL5 | Weakness | 19.2* | 3.8 |
| ADL6 | Limping | 33.8* | 4.6 |
| ADL7 | Walk | 16.9* | 0.8 |
| ADL8 | Go up stairs | 3.8 | 3.8 |
| ADL9 | Go down stairs | 8.5 | 3.8 |
| ADL10 | Stand | 17.7* | 0.8 |
| ADL11 | Kneel on the front of your knee | 5.4 | 31.5* |
| ADL12 | Squat | 3.8 | 44.6* |
| ADL13 | Sit with your knee bent | 3.1 | 45.4* |
| ADL14 | Rise from a chair | 23.1* | 8.5 |
KOS-ADL: Knee Outcome Survey Activities of Daily Living, ADL: Activities of Daily Living;
*
Floor/ceiling effect is present, ≥15% of participants selected extreme choice