Table 1.
Summary of the properties of the functional activities short form
| Property of functional activities short form | Preoperative sample | Postoperative sample |
|---|---|---|
| RMSEA | 0.093 | 0.034 |
| RMSEA LCL | 0.057 | < 0.001 |
| Cronbach’s alpha | 0.78 | 0.82 |
| Correlation with the long-form walking and standing | 0.63 | 0.75 |
| Correlation with the long-form standard activities | 0.85 | 0.85 |
| Correlation with the long-form original advanced activities | 0.79 | 0.80 |
| Correlation with the long-form original discretionary activities | 0.71 | 0.68 |
| Correlation with the long-form original functional activities score | 0.92 | 0.93 |
| Correlation with the SF-12 physical component score | 0.47 | 0.61 |
| Correlation with the SF-12 mental component score | 0.28 | 0.15 |
| Correlation with KOOS pain | 0.70 | 0.62 |
| Correlation with KOOS symptoms | 0.34 | 0.33 |
| Correlation with KOOS ADL | 0.71 | 0.72 |
| Correlation with KOOS sport/recreation | 0.44 | 0.61 |
| Correlation with KOOS quality of life | 0.57 | 0.64 |
RMSEA = root mean square error of approximation; LCL = left confidence limit; KOOS = Knee Injury and Osteoarthritis Score; ADL = activities of daily living.