Table 4.

Model fit indices for the structural model.

Fit index	χ2/df	RMR	RMSEA	GFI	NFI	TLI	CFI	PGFI	PNFI
Observed value	2.261	0.020	0.055	0.971	0.962	0.967	0.978	0.518	0.641
Recommended criterion	≤3	≤0.08		≥0.90				≥0.50

χ²/df, chi-square/degrees of freedom; RMR, root mean square residual; RMSEA, root mean square error of approximation; GFI, goodness-of-fit index; NFI, normed fit index; TLI, Tucker–Lewis index; CFI, comparative fit index; PGFI, parsimony goodness-of-fit index; PNFI, parsimony normed fit index.