. Author manuscript; available in PMC: 2020 Apr 21.

Published in final edited form as: Pers Med Psychiatry. 2018 Oct 16;11-12:16–22. doi: 10.1016/j.pmip.2018.10.002

Table 3.

Tests of Measurement Invariance of the Childhood Trauma Questionnaire by Income Level.

	χ²	df	$χ_{diff}^{2}$	Δdf	RMSEA (90% CI)	WRMR	CFI	TLI
Measurement Invariance
Equal form (Configural Invariance)	1173.220^***	484			0.078 (0.072–0.083)	1.554	0.98	0.98
Equal factor loadings (Metric Invariance)	1067.245^***	503	32.510^*	19	0.069 (0.063–0.075)	1.636	0.98	0.99
Equal indicator thresholds (Scalar Invariance)	–	–	–	–	–	–	–	–
Equal indicator error variances (Strict Invariance)	–	–	–	–	–	–	–	–

Note. N=473; n=202 below the poverty level and n=271 above the poverty level. $χ_{diff}^{2}$ = nested difference. RMSEA=root mean square of error approximation. 90% CI=90% confidence interval for RMSEA. WRMR=weighted root mean square residual. CFI=comparative fit index. TLI=Tucker-Lewis Index. Equality of indicator thresholds and error variances was not tested.

p < 0.05

^**

p < 0.01

^***

p < 0.001.