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Global model fit indices.
| Indices | 1 Factor | 2 Factors | 3 Factors |
| RMSEAa (90% CI) | .24 (.21-.26) | .15 (.13-.18) | .07 (.02-.11) |
| Comparative fit index | .96 | .99 | 1.0 |
| Tucker-Lewis index | .94 | .98 | 1.0 |
| Chi-square test, P value | <.001 | <.001 | <.001 |
| Eigenvalue | 5.55 | 0.83 | 0.53 |
aRMSEA: root mean square error of approximation.
