Table 2 Internal consistency of QoL-PCD scales measured by Cronbach’s α and test–retest reliability measured by ICC
Scale | # Items | Scale Median(IQR) | Cronbach’s α | ICC (95%) |
|---|---|---|---|---|
Physical Functioning | 5 | 80.0 (46.7–93.3) | 0.880 | 0.910 (0.803–0.959) |
Vitality | 3 | 66.7 (44.4–77.8) | 0.463 | 0.817 (0.598–0.916) |
Emotional Functioning | 5 | 86.7 (63.7–93.3) | 0.642 | 0.893 (0.766–0.951) |
Treatment Burden | 4 | 66.7 (41.7–83.3) | 0.809 | 0.670 (0.167–0.869) |
Social Functioning | 3 | 33.3 (0.0–66.7) | 0.681 | 0.768 (0.491–0.894) |
Role | 4 | 66.7 (58.3–83.3) | 0.542 | 0.902 (0.785–0.955) |
Health Perspective | 4 | 50.0 (41.7–66.7) | 0.639 | 0.670 (0.277–0.850) |
Upper Respiratory Symptoms | 4 | 58.3 (41.7–83.3) | 0.687 | 0.853 (0.678–0.933) |
Lower Respiratory Symptoms | 6 | 61.1 (44.4–72.2) | 0.784 | 0.895 (0.769–0.952) |
Hearing Symptoms | 2 | 66.7 (58.3–100) | 0.661 | 0.838 (0.645–0.926) |