Table 2.

Statistical results for multivariate analysis with verbal and non-verbal index scores as dependent variables

Effect	F-valuea	df	P-value
AED group	5.36	6	<0.0001
Maternal IQ	9.37	2	0.0001
Standardized dose	8.61	2	0.0003
Maternal age	6.98	2	0.0012
Preconception folate	3.33	2	0.0379
Race (four categories)	3.89	6	0.0009
Any alcohol during pregnancy	3.05	2	0.0497

Based on age 3 completer population (n = 216).

a F-value = exact F-statistic for Wilk’s Lambda.

df = degrees of freedom.