Table 2.
Goodness-of-fit indices from the confirmatory factor analysis and reliability coefficients.
| HDRS 16 items | HDRS 17 items | |
|---|---|---|
| Confirmatory factor analysis | ||
| X2 (degrees of freedom); p-value | 147.10 (104); p = 0.01 | 159.03 (119); p = 0.01 |
| RMSEA (95% CI) | 0.05 (0.03, 0.06) | 0.04 (0.02, 0.06) |
| Tucker-Lewis index | 0.99 | 0.99 |
| Comparative fit index | 0.99 | 0.99 |
| Average variance extracted | 0.56 | 0.53 |
| Factor loading range | 0.65–0.81 | 0.32–0.81 |
| Reliability | ||
| Cronbach’s alpha (95% CI) | 0.92 (0.91, 0.93) | 0.92 (0.90, 0.93) |
| Composite reliability | 0.95 | 0.95 |
| McDonald’s omega | 0.93 | 0.93 |
CI, confidence interval; HDRS, Hamilton Depression Rating Scale; RMSEA, root mean square error of approximation.