Table 9.
Distribution, internal consistency, reliability, and validity of CAT-LS.
| Bedridden group | Domestic group | Community group | CAT-LS grade | |
|---|---|---|---|---|
| Floor/ceiling effect (%) | – | – | – | 19.2/11.7 |
| Internal consistency | ||||
| Cronbach α | 0.857 | 0.803 | 0.912 | 0.964 |
| Corrected-total correlation | 0.724–0.750 | 0.619–0.721 | 0.809–0.852 | |
| Mean inter-item correlation | 0.657 | 0.463 | 0.694 | |
| Inter-rater reliability (ICC2,1) | 0.974 | 0.928 | 0.979 | 0.964 |
| Kappa coefficient (κ) | ||||
| 1: F1a/F2a/F3a* | 0.927 | 0.864 | 0.855 | |
| 2: F1b/F2b/F3b* | 0.923 | 0.837 | 0.866 | |
| 3: F1c/F2c/F3c* | 0.898 | 0.877 | 0.841 | |
| Concurrent validity† | ||||
| Spearman correlation coefficient | 0.852 | 0.764 | 0.685 | 0.894 |
SD standard deviation, ICC2,1 intraclass correlation coefficient based on two-way random effects.
†Compare with BI total score.
–No value.
*F1a represents the bladder and bowel, F1b represents the feeding, F1c represents the entertainment, F2a represents the toileting, F2b represents the grooming and bathing, F2c represents the housework, F3a represents the exercise in the community mobility, and F3b represents the shopping. F3c represents the social participation.