Table 4.
Test–retest reliability of the PEI-2 for subjects recruited from the TFES group
| Baseline (N = 53)a | Follow-up (N = 53)b | P-value† | ICC | Gwet’s AC | Agreement, % | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean (SD) | Floor (%) | Ceiling (%) | Mean (SD) | Floor (%) | Ceiling (%) | |||||
| Able to cope with life | 4.09 (0.95) | 3.3 | 40.0 | 3.94 (0.77) | 0.0 | 26.4 | N.A. | N.A. | 0.478 | 56.6 |
| Able to understand your illness | 3.55 (0.99) | 5.0 | 15.0 | 3.68 (0.80) | 0.0 | 17.0 | N.A. | N.A. | 0.477 | 56.6 |
| Able to cope with your illness | 3.75 (0.96) | 0.0 | 21.7 | 3.77 (0.78) | 0.0 | 20.8 | N.A. | N.A. | 0.412 | 54.7 |
| Able to keep yourself healthy | 3.68 (0.85) | 0.0 | 18.3 | 3.62 (0.79) | 0.0 | 15.1 | N.A. | N.A. | 0.491 | 60.4 |
| Confident about your health | 3.74 (1.06) | 3.3 | 28.3 | 3.57 (0.89) | 1.9 | 17.0 | N.A. | N.A. | 0.382 | 49.1 |
| Able to help yourself | 4.02 (0.95) | 3.3 | 36.7 | 3.94 (0.84) | 1.9 | 24.5 | N.A. | N.A. | 0.638 | 69.8 |
| PEI-2 total score | 22.83 (4.70) | 0.0 | 5.0 | 22.53 (4.21) | 0.0 | 7.5 | 0.506 | 0.520 | N.A. | N.A. |
N.A., not applicable.
aBaseline data collected in December 2019.
bFollow-up data collected between December 2019 and January 2020.
†Tested by paired t-test.