Table 4.

Relation of prenatal alcohol exposure to corpus callosum area (N = 43)

	r	β1	β2
Prenatal alcohol exposure
At conception
AA/day	−.40**	−.38*	−.34*
AA/occasion	−.31*	−.31*	−.27†
Frequency	−.42**	−.37*	−.34*
Across pregnancy
AA/day	−.39*	−.34*	−.33*
AA/occasion	−.32*	−.31*	−.28†
Frequency	−.41**	−.34*	−.34*

^†p < .06

^*p < .05

^**p < .01

Values are Pearson r. β₁ = standardized regression coefficient, after adjustment for total intracranial volume; β₂ = standardized regression coefficient, after adjustment for total intracranial volume maternal education, prenatal exposure to smoking, marijuana, and methamphetamine.

AA = absolute alcohol