Table 4.

Medical, developmental, and environmental predictors of cognitive skills in 65 individuals with Noonan syndrome: multiple regression analysis^†

	DAS clusters
Predictor Variables	Verbal Ability	Nonverbal Ability
Cardiac disease severity (CSEV rating)	.09	.03
Total passes, hearing screening	.31*	.11
Motor Dexterity (Purdue Pegboard Test)	.30*	.51**
Years of parental education	.27*	.25*
Total R-square	.34**	.40**

^†Data are standardized regression coefficients

^*p < .05

^**p < .01