Table 4.

Multiple regression analyses of the number processing subtests and composite scores on prenatal alcohol exposure (log AA/day) and ADHD (N = 262)

	Prenatal Alcohol			ADHD
	r	β1	β2	r	β1	β2
Exact additiona	−.12†	−.07	−.05	−.27***	−.27***	−.19***
Exact subtractionb	−.10	−.07	−.02	−.31***	−.31***	−.23***
Exact multiplicationc	−.13*	−.11†	−.07	−.29***	−.29***	−.21***
Approximate additiond	−.12†	−.09	−.05	−.24***	−.24***	−.17**
Approximate subtraction	−.17**	−.17**	−.13*	−.30***	−.30***	−.22***
Number comparison	−.27***	−.27***	−.25***	−.14*	−.14*	−.12†
Proximity judgmente	−.22***	−.24***	−.22***	−.23***	−.20**	−.17**
Calculation subtests compositef	−.15*	−.14*	−.09†	−.34***	−.34***	−.24***
Magnitude comparison subtests compositeg	−.23***	−.25***	−.23***	−.25***	−.22**	−.19***

^†p < .10

^*p < .05

^**p < .01

^***p < .001

β₁: Controlling for confounders

β₂: Controlling for confounders and IQ

^aControlling for gender, mother’s age at delivery, and primary caregiver’s years of education in the prenatal alcohol analyses.

^bControlling for primary caregiver’s years of education and Peabody vocabulary score, gender, and maternal smoking during pregnancy in the prenatal alcohol analyses.

^cControlling for gender in the prenatal alcohol analyses.

^dControlling for maternal smoking during pregnancy in the prenatal alcohol analyses.

^eControlling for maternal smoking and heavy cocaine use during pregnancy in the prenatal alcohol analyses. Controlling for gender in the ADHD analyses.

^fControlling for gender in the prenatal alcohol analyses.

^gControlling for maternal smoking and heavy cocaine use during pregnancy in the prenatal alcohol analyses. Controlling for gender in the ADHD analyses.