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 |
| Â | Missing and popular responses | 348 | 2075 |
| Â | Floor/ceiling effects (individual items) | 348 | 1749 |
Construct validity | Confirmatory Factor Analysis | 348 | 1749 |
Internal consistency | Cronbach's α 's | 348 | 1749 |
| Â | Item-total score correlations | 348 | 1749 |
Criterion validity | Floor and ceiling effects (total score) | 348 | 1749 |
| Â | Demographic differences in scores: | - | 1749 |
| Â | Wilcoxon rank sum tests/Kruskal-Wallis tests/Jonckheere's test | Â | Â |
| Â | Correlations with other scales: | Â | Â |
| Â | Spearman's rank correlation coefficient | 72 (EQ-5D VAS) | 1233 (GHQ-12) |
| Â | Â | 63 (PANAS- PA/NA) | Â |
| Â | Â | 63 (SPWB) | Â |
| Â | Â | 71 (SDHS) | Â |
| Â | Â | 79 (WHO-5) | Â |
| Â | Â | 79 (SWLS) | Â |
| Â | Â | 77 (GLS) | Â |
| Â | Â | 67 (EIS) | Â |
| Â | Jonckheere's test | - | 1233(GHQ-12) |
Reliability | Intra-class correlation coefficients | 124 | - |
Social desirability bias | Spearman's rank correlation coefficient | 116 | - |