. Author manuscript; available in PMC: 2013 Oct 1.

Published in final edited form as: J Abnorm Child Psychol. 2012 Oct;40(7):1193–1207. doi: 10.1007/s10802-012-9627-6

Table 1.

Study 1 sample characteristics for each group

	Control (n=32)	ADHD (n=24)	p-value
Age in years, mean (SD)	10.9 (1.1)	10.8 (1.1)	.87
Gender, % female	19%	12%	.50
Race, % minority	16%	12%	.98

WISC estimated full scale IQ, mean (SD)	112 (12)	108 (12)	.17

WJ Test of achievement, mean (SD)
Letter-word identification	110 (11)	103 (11)	.02
Calculation	112 (10)	104 (15)	.01
Spelling	110 (13)	99 (13)	< .01

ADHD Symptoms
Inattentive, DBD-RS mean (SD)^*
Parent report	<1 (.4)	8 (1.2)	< .001
Teacher report	<1 (.4)	6 (3.9)	< .001
Hyperactive/Impulsive, DBD-RS mean (SD)^*
Parent report	<1 (.2)	6 (1.7)	< .001
Teacher report	<1 (.2)	5 (2.5)	< .001
Attention Problems subscale t-score (SD)
Parent report (CBCL)	51.3 (2.4)	72.4 (7.5)	< .001
Teacher report (TRF)	51.2 (2.9)	66.3 (6.9)	< .001

ODD Symptoms
DBD-RS mean (SD)^*
Parent report	0 (0)	4 (2.5)	< .001
Teacher report	0 (0.2)	2 (3.0)	< .001
ODD Problems subscale t-score (SD)
Parent Report (CBCL)	51.0 (2.3)	67.0 (8.1)	< .001
Teacher (TRF)	51.3 (2.9)	61.6 (8.5)	< .001

CD Symptoms
DBD-RS mean (SD)^*
Parent report	0 (0)	1 (1)	< .001
Teacher report	0 (0)	<1 (1)	.001
CD Problems subscale t-score (SD)
Parent Report (CBCL)	51.6 (3.1)	65.7 (9.0)	< .001
Teacher Report (TRF)	51.4 (3.0)	61.0 (8.0)	< .001

Internalizing Symptoms
Child Depression Inventory (CDI) t-score (SD)	44 (4.6)	49 (7.9)	.004
Revised Children's Manifest Anxiety Score (RC-MAS) overall t-score (SD)	45 (9.3)	53 (8.6)	.002

Note. These values represent the total number of symptoms endorsed on the DBD-RS (i.e., rated as ‘pretty much’ or ‘very much’).