Table 3.

Linear growth curve model fit statistics of models in which all parameters are constrained to be equal and unequal between the sexes in the ABCD cohort ($n=\mathrm{10,783}$; female $n=\mathrm{5,122}$; male $n=\mathrm{5,661}$).

CBCL subscale	Model	χ2 (df)	Scaling factor	Scaled Δχ2 (df)	RMSEA (90% CI)	CFI	TLI	SRMR
Internalizing	Equal across sexes	116.1 (19)	2.3700	83.3 (9)	0.031 (0.026, 0.036)	0.984	0.990	0.045
Internalizing	Unequal across sexes	22.0 (10)	2.0086	—	0.015 (0.006, 0.023)	0.998	0.998	0.014
Externalizing	Equal across sexes	181.4 (19)	3.2867	134.7 (9)	0.040 (0.035, 0.045)	0.966	0.979	0.106
Externalizing	Unequal across sexes	22.3 (10)	2.6585	—	0.015 (0.007, 0.024)	0.997	0.997	0.018

Note: Model fit and chi-square difference comparisons between models in which growth factor parameters are constrained or unconstrained across females and males. Growth curve parameters for the unconstrained models can be seen in Figure 1. For chi-square differences tests of individual parameters, see Table S3. 90% CI, 90% confidence interval; ABCD, Adolescent Brain and Cognitive Development study; CBCL, Child Behavior Checklist; CFI, Comparative Fit Index; CI, confidence interval; df, degrees of freedom; Δχ², change in chi-square; RMSEA, Root Means Square Error of Approximation; SRMR, Standardized Root Mean Squared Residual; TLI, Tucker-Lewis Index.