Table 7.

Childhood hyperactivity-inattention symptoms and other covariates: multiple linear regression models of global academic performance in youths

	Unadjusted β (SD)	T Value	Model 1 β (SD)	T Value	Model 2 β (SD)	T Value
CBCL symptoms
Hyperactivity-inattention	−1.70 (0.17)	−9.81***	−1.30 (0.18)	−7.19***	−0.91 (0.18)	−4.95***
Anxious/depressed	−0.79 (0.18)	−4.32***
Conduct disorder	−1.51 (0.18)	−8.50***	−1.08 (0.18)	−5.87***	−0.93 (0.18)	−5.03***
Oppositional defiant disorder	−0.51 (0.16)	−3.11**
Familial variables
Low income	−0.37 (0.13)	−2.89**	−0.31 (0.14)	−2.50*	−0.32 (0.12)	−2.61**
Parents divorced, separated, widowed or single	−0.29 (0.25)	−1.18
Parental psychopathology	−0.34 (0.18)	−1.91

Model 1 (N=1203) was adjusted on Age and Gender

Model 2 (N=1178) was adjusted on Age, Gender and School difficulties previous to baseline

^***p<0.001,

^**p<0.01,

^*p<0.05