Table 3.
Mean values and test-retest reliability using intraclass correlation coefficients.
| Items | Test scores | Retest scores | ICC (95% CI)∗ |
|---|---|---|---|
| Mean (SD) | Mean (SD) | ||
| JS1 | 5.13 (1.82) | 5.83 (1.49) | 0.923 (0.846–0.963)∗∗ |
| JS2 | 4.71 (1.94) | 5.30 (1.92) | 0.949 (0.895–0.975)∗∗ |
| JS3 | 4.81 (1.91) | 5.23 (2.27) | 0.863 (0.732–0.932)∗∗ |
| JS4 | 5.92 (1.53) | 6.17 (1.58) | 0.900 (0.801–0.951)∗∗ |
| JS5 | 6.12 (1.41) | 6.67 (0.80) | 0.848 (0.705–0.925)∗∗ |
| Total | 26.69 (7.74) | 29.2 (7.03) | 0.958 (0.914–0.980)∗∗ |
ICC = intraclass correlation coefficients; CI = confidence interval; SD = standard deviation. ∗ICC values using a two-way mixed-effects model. ∗∗p < 0.001.