Table 3.
Test–retest reliability, t-test and agreement values of T1 versus T2 and of WORQ-FULL versus WORQ-BRIEF
| WORQ FULL T1 vs T2 | WORQ BRIEF T1 vs T2 | WORQ FULL T1 vs BRIEF T1** | ||
|---|---|---|---|---|
| All n = 74* | ICC (95% CI) | 0.84 (0.13–0.95) | ||
| Range of differences | – | – | − 2.83 to 1.0 | |
| Mean of differences (SD) | – | – | − 0.9 (0.7) | |
| 95% CI of difference T1-T2 (p value) | – | – | − 1.05 to − 0.72 (0.00) | |
| Limits of agreement | – | – | 0.50 to − 2.28 | |
| Effect size needed to exceed change I | – | – | 0.79 | |
| Effect size needed to exceed change G | – | – | 0.09 | |
| Returned n = 49* | ICC (95% CI) | 0.86 (0.69–0.93) | 0.87 (0.67–0.94) | |
| Range of differences | − 73 to 93 | − 16 to 35 | ||
| Mean of differences (SD) | 18.1 (32.3) | 7.4 (11.5) | ||
| 95% CI of difference T1-T2 (p value) | 8.77–27.50 (0.00) | 4.03–10.69 (0.00) | ||
| Limits of agreement | − 45.08 to 81.34 | − 15.12 to 29.84 | ||
| Effect size needed to exceed change I | 0.90 | 0.82 | ||
| Effect size needed to exceed change G | 0.13 | 0.12 | ||
| No changes n = 28 | ICC (95% CI) | 0.85 (0.64–0.93) | 0.86 (0.64–0.94) | |
| Range of differences | − 39 to 93 | − 16 to 30 | ||
| Mean of differences (SD) | 17.2 (32.8) | 6.8 (11.5) | ||
| 95% CI of difference T1-T2 (p value) | 4.509–29.90 (0.01) | 2.36–11.24 (0.004) | ||
| Limits of agreement | − 46.99 to 81.39 | − 15.64 to 29.24 | ||
| Effect size needed to exceed change I | 0.95 | 0.91 | ||
| Effect size needed to exceed change G | 0.18 | 0.17 | ||
| SCI n = 13 | ICC (95% CI) | 0.77 (− 0.02 to 0.94) | 0.82 (0.14–0.95) | |
| Stroke n = 23* | ICC (95% CI) | 0.88 (0.68–0.95) | 0.87 (0.68–0.95) |
CI confidence interval, G group level, I individual level, ICC intraclass correlation coefficient, SD standard deviation
*1 missing
**Calculated with the mean item score