Domain (No of questions) | Possible range | Actual range | Mean score | SD | Floor effect (%) | Ceiling effect (%) |
---|---|---|---|---|---|---|
Estimates of floor and ceiling effects (numbers of respondents with the minimum possible and maximum possible scores for each domain, respectively). | ||||||
Fatigue (11) | 11−55 | 11−54 | 34.6 | 9.5 | 1.3 | 0.0 |
Social (10) | 10−50 | 11−49 | 28.5 | 9.2 | 0.0 | 0.0 |
Symptoms (7) | 7−35 | 7−31 | 18.5 | 5.05 | 2.5 | 0.0 |
Cognitive (6) | 6−30 | 6−30 | 15.7 | 6.15 | 12.5 | 2.9 |
Emotion (3) | 3−15 | 3−15 | 9.08 | 3.2 | 2.0 | 5.4 |
Itch (3) | 3−15 | 3−15 | 6.02 | 3.32 | 36.7 | 1.7 |