. Author manuscript; available in PMC: 2023 Apr 25.

Published in final edited form as: Behav Ther. 2019 Sep 10;51(2):294–309. doi: 10.1016/j.beth.2019.07.008

Table 2.

Fit Statistics for MTMM Models by Sample^a

Model	CFI	TLI	RMSEA	Mood and tantrum-related impairment factor correlation

EmoGrow—single trait	.851	.791	.168
W2W—single trait	.894	.841	.101
EmoGrow—mood and tantrum-related impairment factors	.999	.998	.015	.513
W2W—mood and tantrum-related impairment factors	.995	.992	.022	.580
Combined—free	1.000	1.000	.005	.573 (W2W) .464 (EmoGrow)
Combined—invariant	1.000	1.002	.000	.573 (W2W) .464 (EmoGrow)

Note. MTMM = multitrait multimethod; CFI = comparative fit index; TLI = Tucker–Lewis index; RMSEA = root mean square error of approximation; WTW = When to Worry. Constraining factor loadings to invariance yields a nonsignificant loss of fit ( $χ^{2_{8}} = 5.57$ , p = .695).

Model fit statistics from structural equation models of the Early Childhood Irritability-Related Impairment Interview (E-CRI). The two combined data models are fit as multiple group models, with EmoGrow data comprising one group and W2W data comprising the other.