Table 6.
Test-retest reliability of the 3L and the 5L
| Dimension | Weighted kappa coefficient (95% CI) | Percentage agreement | ||
|---|---|---|---|---|
| 3L | 5L | 3L | 5L | |
| Mobility | 0.70 (0.53-0.86) | 0.57 (0.40-0.74) | 0.89 | 0.83 |
| Self-care | n/a* | n/a | 0.98 | 0.97 |
| Usual activities | 0.39 (0.16-0.62) | 0.45 (0.25-0.65) | 0.82 | 0.81 |
| Pain/discomfort | 0.56 (0.39-0.72) | 0.44 (0.29-0.58) | 0.78 | 0.67 |
| Anxiety/depression | 0.50 (0.31-0.70) | 0.49 (0.33-0.65) | 0.82 | 0.77 |
| Intraclass correlation coefficient (ICC)** | ||||
| EQ-5D index | 0.64 (0.51-0.74) | 0.70 (0.57-0.79) | ||
*Not enough information to calculate kappa coefficient for self-care dimension.
**ICC was 2-way random, single measures, and absolute agreement.