Table 2.
Results of WHO-5 item analyses, internal consistency, exploratory and confirmatory factor analyses in adults and older adults
| Adults ( < 65 years of age) (n = 940) | Older Adults (65 and over) (n = 812) | ||||||
|---|---|---|---|---|---|---|---|
| WHO-5 items | Cor.(a) | C.Alpha(b) | FacL(c) | Cor.(a) | C.Alpha(b) | FacL (c) | |
| 1. I have felt cheerful and in good spirits | 0.69 | 0.75 | 0.83 | 0.70 | 0.82 | 0.83 | |
| 2. I have felt calm and relaxed | 0.67 | 0.76 | 0.82 | 0.68 | 0.82 | 0.81 | |
| 3. I have felt active and vigorous | 0.72 | 0.74 | 0.85 | 0.73 | 0.81 | 0.85 | |
| 4. I woke up feeling fresh and rested | 0.61 | 0.78 | 0.77 | 0.70 | 0.82 | 0.81 | |
| 5. My daily life has been filled with things that interest me | 0.36 | 0.85 | 0.50 | 0.55 | 0.86 | 0.69 | |
| Overall Cronbach’s Alpha value | 0.81 | 0.86 | |||||
| Exploratory Factor Analyses (EFA) | |||||||
| KMO | 0.83 | 0.82 | |||||
| Bartlett’s sphericity test | 0.000 | 0.000 | |||||
| Cumulative exploratory variance percentage | %58.5 | %63.9 | |||||
| Confirmatory Factor Analyses (CFA) | |||||||
| Chi-square/DF | 6.0 | 23.3 | |||||
| RMSEA | 0.073 | 0.166 | |||||
| CFI | 0.989 | 0.956 | |||||
| NFI | 0.986 | 0.954 | |||||
| GFI | 0.987 | 0.946 | |||||
| Stand RMR | 0.021 | 0.043 | |||||
| Item analyses of the CFA | |||||||
(a) Item total correlations corrected for overlap; (b) If item deleted Alpha values; (c) Factor loadings generated by Principal Components Analyses; KMO: Kaiser-Meyer-Olkin Measure of Sampling Adequacy, RMSEA: Root Mean Square Error of Approximation, CFI: Comparative Fit Index, NFI: Normed Fit Index, GFI: Goodness of Fit Index, Stand.RMR: Standardized Root Mean Square Residual.