Table 3.

Associations between the two brain canonical variate scores and cognitive ability (n = 3968)

	Fluid intelligence		Crystallized intelligence		Matrix reasoning		Total cognition
	B (95% CI)	P	B (95% CI)	P	B (95% CI)	P	B (95% CI)	P
CV1	−0.04 [−0.07, −0.01]	0.01	−0.04 [−0.07, −0.01]	0.003	−0.001 [−0.03, 0.03]	0.93	−0.05 [−0.08, −0.02]	<0.001
CV2	−0.03 [−0.06, 0.00]	0.05	−0.04 [−0.07, 0.02]	0.003	0.003 [−0.03, 0.03]	0.82	−0.05 [−0.08, −0.02]	0.002

Separate linear regression analysis of cognitive ability and the two brain canonical variate scores. Betas are standardized. All the models were adjusted for child age, child sex, race/ethnicity, parental education, and scanning sites. After excluding the participants with missing values in any of the four cognitive abilities, the final sample size of this analysis is 3968. CV1: brain canonical variate 1, CV2: brain canonical variate 2.