Table 3.

Multivariate logistic regression analysis of Asperger syndrome (ASP) versus autistic disorder (AUT) phenotype among children with ASD by presence of professionally diagnosed maternal mood disorder (n = 998 mother-child dyads).

Independent variables	Adjusted odds ratios
	ASP versus AUT (95% CI)
Maternal bipolar disorder	2.11∗ (1.20, 3.69)
Maternal depression	1.62∗ (1.19, 2.19)
Maternal age	1.00 (0.98, 1.03)
Maternal race (ref = nonwhite)	0.63 (0.31, 1.26)
Maternal ethnicity (ref = Hispanic)	0.56 (0.26, 1.20)
Maternal education (ref = college degree)	1.26 (0.93, 1.70)
Child age	1.20∗∗ (1.15, 1.26)
Child gender (ref = female)	0.73 (0.48, 1.11)

^∗ P < .05, ^∗∗ P < .001.