. Author manuscript; available in PMC: 2011 May 18.

Published in final edited form as: J Clin Child Adolesc Psychol. 2008 Jul;37(3):651–663. doi: 10.1080/15374410802148095

Table 2.

Results from Hierarchical Linear Models Predicting Parent Ratings of Inattention, Hyperactivity and Impulsivity Symptoms over Time and Through the Transition to Middle School

Variables	Inattention Estimate (se)	Hyperactivity Estimate (se)	Impulsivity Estimate (se)
Intercept	22.30 (1.03)^***	15.27 (0.69)^***	8.12 (0.38)^***
Age	−1.68 (0.21)^***	−1.75 (0.14)^***	−1.05 (0.14)^***
Age²	------------	------------	0.03 (0.01)^*
Stimulant usage	−2.50 (0.86)^**	−0.70 (0.56)^**	−0.76 (0.17)^***
Treatment group
Comb	−0.83 (1.02)	−0.21 (0.70)	------------
MedMgt	−0.51 (1.02)	−0.75 (0.70)	------------
Beh	−1.90 (1.00)	−1.11 (0.68)	------------
CC	0	0	------------
Stimulant × treatment	^*	^**
Med × Comb	−1.45 (1.13)	−1.73 (0.74)^*	------------
Med × MedMgt	−1.51 (1.12)	−1.48 (0.73)^*	------------
Med × Beh	1.84 (1.66)	0.72 (0.90)	------------
Med × CC	0	0	------------
Transition year × treatment		^*
Transition × Comb	------------	1.26 (0.53)^*	------------
Transition × MedMgt	------------	0.80 (0.53)	------------
Transition × Beh	------------	−0.07 (0.57)	------------
Transition × CC	------------	0	------------
Transition year	3.35 (0.57)^***	1.75 (0.50)^***	1.26 (0.21)^***
Post transition slope	1.59 (0.28)^***	1.50 (0.18)^***	0.45 (0.14)^**

Note.

p<.05;

^**

p<.01;

^***

p<.001;

Comb = Combined Treatment, MedMgt = Medication Management Only, Beh = Behavioral Only, CC = Community Comparison, Random effects are italicized.