Table 2.
Outcome measure scores, floor and ceiling effects at baseline across trial-arms
| Short name | N (%) | Mean | Median | SD | P. floor/ worst score |
P. ceiling/ best score |
O worst score |
O best score |
N floor/ worst score (%) |
N ceiling/ best score (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| PHQ-9 | 361 (100) | 14.332 | 14 | 4.991 | 27 | 0 | 27 | 2 | 1 (0.3) | 0 (0) |
| GAD-7 | 361 (100) | 12.623 | 13 | 4.521 | 21 | 0 | 21 | 0 | 10 (2.8) | 1 (0.3) |
| EQ-5D-5L VSE | 355 (98.3) | 0.730 | 0.783 | 0.163 | − 0.285 | 1 | − 0.010 | 1 | 0 (0) | 3 (0.8) |
| EQ-5D-5L cross-walk | 355 (98.3) | 0.652 | 0.721 | 0.202 | − 0.594 | 1 | 0.076 | 1 | 0 (0) | 3 (0.8) |
| ReQoL-UI | 353 (97.8) | 0.778 | 0.807 | 0.141 | − 0.195 | 1 | 0.115 | 0.995 | 0 (0) | 0 (0) |
| ReQoL-10 | 353 (97.8) | 18.598 | 18 | 6.401 | 0 | 40 | 3 | 37 | 0 (0) | 0 (0) |
| EQ-5D-5L depression/anxiety | 355 (98.3) | 3.259 | 3 | 0.827 | 5 | 1 | 5 | 1 | 26 (7.3) | 3 (0.8) |
The table shows the possible (P.) floor/worst and ceiling/best scores as well as the observed (O.) worst and best scores achieved by the respondents; these are shown rather than possible and observed minimum and maximum scores due to the fact that for the preference-based scores a higher score is a better state, whereas for the condition-specific scores the opposite is true (i.e. a higher score is a worst state)
EQ-5D-5L EQ-5D Five Level version, GAD-7 generalised anxiety disorder-7, N number of responder, O. observed, PHQ-9 Patient Health Questionnaire-9, P. possible, ReQoL-UI(-10) Recovering Quality of Life—Utility Index (10 item), SD standard deviation