Table 2.
Parameters of fit of several CFA models on the complete SWBS and on the SWBS-Sk consisting of positively worded items only.
| Model Fit Parameters | Model 1: 1-Factor Model with All Items |
Model 2: 2-Factor Model with All Items |
Model 3: 2-Factor Model Positively Worded Items Only |
|---|---|---|---|
| DWLS Chi-Square (df) | 3490.41 (35) *** | 698.42 (34) *** | 53.07 (13) *** |
| CFI | 0.956 | 0.992 | 0.999 |
| TLI | 0.943 | 0.989 | 0.999 |
| RMSEA (90% CI) | 0.312 (0.303–0.320) | 0.139 (0.130–0.148) | 0.055 (0.040–0.071) |
| SRMR | 0.206 | 0.098 | 0.028 |
| Δ Chi-Square (Δ df) † | 338.19 (1) *** | 638.03 (21) *** |
Note: df = degrees of freedom; CI = confidence interval; † chi-square difference test compared to the previous model; *** p < 0.001.