Table 2.
Floor effect, ceiling effect, and item-scale correlation of Chinese-language version of the Warwick-Edinburgh Mental Well-being Scale. The floor and ceiling effects were defined as the lowest (1 point) and highest (5 points) scores, respectively (N=572).
| Item | Subjects with floor effect, n (%) | Subjects with ceiling effect, n (%) | Item-scale correlationa, r |
| 1 | 69 (12.1) | 67 (11.7) | 0.764 |
| 2 | 100 (17.5) | 44 (7.7) | 0.809 |
| 3 | 45 (7.9) | 86 (15) | 0.823 |
| 4 | 79 (13.8) | 82 (14.3) | 0.697 |
| 5 | 34 (5.9) | 92 (16.1) | 0.837 |
| 6 | 47 (8.2) | 49 (8.6) | 0.867 |
| 7 | 51 (8.9) | 43 (7.5) | 0.885 |
| 8 | 45 (7.9) | 69 (12.1) | 0.904 |
| 9 | 63 (11) | 40 (7) | 0.835 |
| 10 | 45 (7.9) | 64 (11.2) | 0.865 |
| 11 | 63 (11) | 45 (7.9) | 0.832 |
| 12 | 66 (11.5) | 44 (7.7) | 0.825 |
| 13 | 67 (11.7) | 58 (10.1) | 0.768 |
| 14 | 47 (8.2) | 52 (9.1) | 0.875 |
aCorrelations were deemed significant at the P<.01 (ie, 2 significant figures) level.