Table 1 Summary of psychometric tests carried out on two samples
From: The Warwick-Edinburgh Mental Well-being Scale (WEMWBS): development and UK validation
| Psychometric property | Statistical test | Student sample (number) | Population sample (number) |
|---|---|---|---|
| Content validity | Responder bias: Chi-square tests | - | 2075 |
| Missing and popular responses | 348 | 2075 | |
| Floor/ceiling effects (individual items) | 348 | 1749 | |
| Construct validity | Confirmatory Factor Analysis | 348 | 1749 |
| Internal consistency | Cronbach's α 's | 348 | 1749 |
| Item-total score correlations | 348 | 1749 | |
| Criterion validity | Floor and ceiling effects (total score) | 348 | 1749 |
| Demographic differences in scores: | - | 1749 | |
| Wilcoxon rank sum tests/Kruskal-Wallis tests/Jonckheere's test | |||
| Correlations with other scales: | |||
| Spearman's rank correlation coefficient | 72 (EQ-5D VAS) | 1233 (GHQ-12) | |
| 63 (PANAS- PA/NA) | |||
| 63 (SPWB) | |||
| 71 (SDHS) | |||
| 79 (WHO-5) | |||
| 79 (SWLS) | |||
| 77 (GLS) | |||
| 67 (EIS) | |||
| Jonckheere's test | - | 1233(GHQ-12) | |
| Reliability | Intra-class correlation coefficients | 124 | - |
| Social desirability bias | Spearman's rank correlation coefficient | 116 | - |