Table 2.

Model fit indices in the unifactorial model and configurational invariance by sex.

Model			χ 2		df		P value		χ2/df		CFIa		GFIb		RMSEAc (90% CI)		ΔCFI		Δχ2		Δdf
Unifactorial			26.5		20		<.001		1.33		0.85		0.96		0.05 (0.00-0.09)		—d		—		—
Measurement invariance across sex
	Unconstrained	43.8		40		—		1.10		0.90		0.96		0.04 (0.00-0.09)		—		—		—
	1	48.6		47		<.001		1.03		1.00		0.96		0.00 (0.00-0.07)		0.10		4.8		7
	2	56.0		54		<.001		1.04		0.95		0.99		0.02 (0.00-0.08)		0.05		7.4		7
	3	56.0		54		<.001		1.04		0.95		0.99		0.02 (0.00-0.08)		0.00		0.0		0

^aCFI: comparative fit index.

^bGFI: goodness-of-fit index.

^cRMSEA: root mean square error of approximation.

^dNot applicable.