Table 2.
Estimates of confirmatory factor analyses: model-fit indices for a one-factor model, a three-factor model and bifactor model
| Model | χ2 (df) | CFA | TLI | RMSEA (CI 90) | SRMR | AIC | BIC |
|---|---|---|---|---|---|---|---|
| Three-factor | 1019.12 (186) | .767 | .737 | .119 (.112-.126) | .083 | 20285.25 | 20459.88 |
| One-factor | 1047.39 (189) | .759 | .732 | .120 (.113-.127) | .083 | 20314.76 | 20447.74 |
| Bifactor | 549.85 (168) | .894 | .868 | .084 (.076-.092) | .066 | 19783.69 | 20028.16 |
χ2 Yuan-Bentler scaled Chi-square (df = degrees of freedom), CFI Comparative Fit Index, TLI Tucker-Lewis index, RMSEA Root Mean Square Error of Approximation and 90% confidence interval, SRMR Standardized Root Mean Square Residual, AIC Akaike’s Information Criterion, BIC Bayes Information Criterion. Bold indicates the best fitting factor solution