Table 2.
Multi-group analysis of fit indices by gender and age groups
| Model | χ2/df | p | TLI | CFI | RMSEA | Δ-RMSEA | Δ-CFI |
|---|---|---|---|---|---|---|---|
| Across gender group | |||||||
| Male | 5.98 | <.001 | 0.91 | 0.93 | 0.07 | / | / |
| Female | 4.70 | <.001 | 0.93 | 0.94 | 0.07 | / | / |
| Configural invariance | 5.34 | <.001 | 0.92 | 0.93 | 0.05 | / | / |
| Metric invariance | 5.14 | <.001 | 0.92 | 0.93 | 0.05 | −0.001 | 0 |
| Scalar invariance | 5.22 | <.001 | 0.92 | 0.93 | 0.05 | −0.001 | −0.007 |
| Residual invariance | 5.60 | <.001 | 0.91 | 0.92 | 0.05 | 0.001 | −0.019 |
| Across age group | |||||||
| Below mean age | 7.54 | <.001 | 0.91 | 0.92 | 0.08 | / | / |
| Above mean age | 4.05 | <.001 | 0.90 | 0.91 | 0.06 | / | / |
| Configural invariance | 5.79 | <.001 | 0.89 | 0.92 | 0.05 | / | / |
| Metric invariance | 5.65 | <.001 | 0.90 | 0.92 | 0.05 | −0.001 | −0.003 |
| Scalar invariance | 8.23 | <.001 | 0.84 | 0.86 | 0.07 | 0.012 | −0.061 |
| Residual invariance | 8.64 | <.001 | 0.83 | 0.84 | 0.07 | 0.013 | −0.078 |
χ2 chi-squared, df degrees of freedom, CFI comparative fit index, TLI Tucker-Lewis Index, RMSEA root-mean-square error of approximation, ΔCFI differences in the value of the Comparative Fit Index, ΔRMSEA differences in the value of the root-mean-square error of approximation