Table 2. Fit Indices of the BDI-II from confirmatory factor analysis in a Brazilian adult community-dwelling sample.
| Models (M) | χ² (df) | χ²/df | RMSEA (CI 95%) | p-close | CFI | TLI |
|---|---|---|---|---|---|---|
| MI Unidimensional | 787.131 (189) | 4.1 | .066 (.062 – .071) | < .001 | .956 | .952 |
| MII Two-factor | 638.727 (188) | 3.4 | .058 (.053 – .063) | .005 | .967 | .963 |
| Bifactor | 536.734 (169) | 3.2 | .055 (.050 – .060) | .054 | .973 | .967 |
| MIII Two-factor | 625.323 (188) | 3.3 | .057 (.052 – .062) | .010 | .968 | .964 |
| Bifactor | 530.839 (169) | 3.1 | .055 (.049 – .060) | .071 | .974 | .967 |
| MIV Two-factor | 705.990 (188) | 3.7 | .062 (.057 – .067) | < .001 | .962 | .958 |
| Bifactor | 600.671 (169) | 3.5 | .060 (.055 – .065) | .001 | .969 | .961 |
| MV Two-factor | 658.773 (188) | 3.5 | .059 (.054 – .064) | .001 | .966 | .962 |
| Bifactor | 523.127 (169) | 3.1 | .054 (.049 – .059) | .099 | .974 | .968 |
| Bifactor (modified)* | 428.281 (172) | 2.5 | .046 (.040 – .051) | .908 | .981 | .977 |
| MVI Three-factor | 595.052 (186) | 3.2 | .055 (.050 – .060) | .037 | .970 | .966 |
| Bifactor | 529.528 (169) | 3.1 | .055 (.049 – .060) | .075 | .974 | .967 |
| MVII Three-factor | 640.314 (186) | 3.4 | .058 (.053 – .063) | .003 | .967 | .963 |
| Bifactor ** | - | - | - | - | - | - |
Notes: Highlighted in Italics: Model with the best-fit indices.
* Bifactor Model V (modified): items 15, 16, 18 and 21 associated only to the General Factor. CA factor: items 1–10, 12, and 14. SA factor: items 11, 13, 17, and 19. Item 20: specified as reference item for proper estimation of the G factor in bifactor models (see Eid et al., 2017).
** Bifactor Model VII did not converge due to negative covariance matrix of three parameters.