Table 1.

Comparison of the fit indices of the four models considered.

Model	χ² (df)	p(χ²)	RMSEA	RMSEA 90% CI	SRMR	CFI	TLI
1	1024.68 (558)	<0.001	0.066	[0.050–0.071]	0.083	0.912	0.901
2	1487.14 (584)	<0.001	0.076	[0.071–0.080]	0.099	0.830	0.817
3	356.74 (288)	=0.004	0.030	[0.018–0.039]	0.064	0.981	0.977
4	597.68 (314)	<0.001	0.058	[0.051–0.065]	0.083	0.922	0.912

Note. Model 1 = 36 items and 9 correlated factors; Model 2 = 36 items, 2 s-order factors and 9 first-order factors; Model 3 = 27 items and 9 correlated factors; Model 4 = 27 items, 2 s-order factors and 9 first-order factors. RMSEA = root mean square error of approximation; CFI = comparative fit index; TLI = Tucker–Lewis index; df = degrees of freedom; CI = confidence interval.