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Results of the confirmatory factor analysis.
| Model | χ2 (df) | χ2/df | RMSEA (90% CI) | CFI | NFI | TLI | RFI |
| 12-Item version (without error term correlation) | 433.13 (54) | 8.02 | 0.138 (0.128–0.150) | 0.810 | 0.790 | 0.768 | 0.744 |
| 12-Item version (Bifactor model) | 84.22 (42) | 2.01 | 0.053 (0.036–0.069) | 0.979 | 0.959 | 0.967 | 0.936 |
| 5-Item version | 2.79 (5) | 0.56 | 0.000 (0.000–0.052) | 1.000 | 0.995 | 1.007 | 0.991 |
N = 371.
