Table 4.
ICC test for each of the main domains, indicating moderate to excellent correlation over time between baseline and Week 8 values
| Domain | Item | Average ICC coefficient | 95% CI | F-test with true value 0 |
|
|---|---|---|---|---|---|
| Value | P-value | ||||
| SF-BPI | Average severity | 0.79 | 0.57–0.9 | 4.78 | 0.000 |
| Worst severity | 0.73 | 0.45–0.87 | 3.72 | 0.000 | |
| Least severity | 0.87 | 0.73–0.94 | 7.52 | 0.000 | |
| Current severity | 0.88 | 0.74–0.94 | 8.76 | 0.000 | |
| SF-MPQ | Continuous | 0.79 | 0.56–0.91 | 4.87 | 0.000 |
| Intermittent | 0.9 | 0.78–0.95 | 9.92 | 0.000 | |
| Neuropathic | 0.83 | 0.63–0.92 | 5.83 | 0.000 | |
| Affective | 0.52 | 0.04–0.78 | 2.08 | 0.031 | |
| EQ-5D | Mobility | 0.89 | 0.77–0.95 | 9.00 | 0.000 |
| Self-care | 0.92 | 0.84–0.96 | 12.6 | 0.000 | |
| Usual activities | 0.76 | 0.49–0.88 | 4.08 | 0.000 | |
| Pain/discomfort | 0.78 | 0.55–0.9 | 4.63 | 0.000 | |
| Anxiety/depression | 0.85 | 0.68–0.93 | 6.56 | 0.000 | |
| Health status | 0.62 | 0.19–0.82 | 2.60 | 0.006 | |
ICC values: <0.5 = poor, 0–5–0.75 = moderate, 0.75–0.9 = good and >0.9 = excellent correlation.