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. Author manuscript; available in PMC: 2013 Jul 18.
Published in final edited form as: J Abnorm Child Psychol. 2008 Nov;36(8):1237–1250. doi: 10.1007/s10802-008-9246-4

Table 1.

Participant Characteristics (n=70)

Variable Mean (SD) %
Child characteristics
 Age (years) 8.06 (1.2)
 Sex (male) 71
 WISC Verbal (scaled score) 11.20 (3.9)
 WISC Performance (scaled score) 9.61(3.8)
Race/ethnicity
 Caucasian 36.2
 African-American 40.6
 Hispanic 4.3
 Native American 1.4
 Mixed 7.2
 Other 1.4
 Refused 8.7
ADHD Diagnosis
 Combined type 78.9
 Inattentive type 15.5
 Hyperactive/impulsive type 5.6
Comorbidity
 Oppositional defiant disorder 47.9
 Conduct disorder 19.7
Medication status
 On medication 65.8
 Not on medication 34.2
Mother characteristics
 Age 38.6 (6.1)
Marital status
 Married 71
 Divorced/separated/other 29
Average education level 3 or more years of college, but did not receive a degree
Average total family income $95,000–99,999 ($70,000–75,000)
Race/ethnicity
 Caucasian 45.6
 African American 45.6
 Hispanic 7.4
 Other 1.5

WISC Wechsler intelligence scale for children, 4th ed., DBD disruptive behavior disorders rating scale, ADHD attention deficit/hyperactivity disorder, ODD oppositional defiant disorder, CD conduct disorder