Table 4.

Model comparison

Fit Index	Model 1	Model 2	Model 3	Model 4
χ2	823.8	839.6	660.0	600.8
df	325	332	281	279
χ2/df	2.535	2.529	2.349	2.153
RMSEA (confidence interval)	0.057 (0.052–0.062)	0.057 (0.052–0.062)	0.054 (0.048–0.059)	0.049 (0.044–0.055)
GFI	0.887	0.885	0.902	0.912
AGFI	0.859	0.859	0.878	0.889
CFI	0.927	0.925	0.941	0.950
NFI	0.885	0.883	0.902	0.910
NNFI (TLI)	0.915	0.915	0.931	0.941