Table 1 Demographic and clinical characteristics (Frequency or Mean and SD) of children with ADHD and controls

Gender (M/F)

17/9

30/19

χ ²(1) = 0.13

.72

Age

8.46 (1.5)

8.69 (1.2)

F(1,73) = 1.96

.17

Ethnic Background

χ ²(4) = 4.31

.37

 Caucasian

21

33

 African

0

1

 Asian

0

6

 Multi-ethnic

3

4

 Unknown

2

5

SES

50.3 (10.74)

50.7 (11.5)

F(1,47) = .03

.86

IQ

98.9 (17.5)

105.7 (13.6)

F(1,68) = 2.34

.13

Pubertal Development

6.5 (2.2)

6.7 (1.7)

F(1,73) = .27

.61

Conners’ ADHD Index- parent

65.77 (11.84)

49.32 (7.64)

F(1,71) = 7.81

.007

ADHD subtype

χ ²(3) = 58.67

<.001

 No

0

49

 Combined

17

0

 Inattention

8

0

 Hyperactive-Impulsive

1

0

Comorbid ODD

8

0

χ ²(1) = 16.88

<.001

Comorbid CD

2

0

χ ²(1) = 3.87

.05

CBCL

 Internalizing

60.13 (8.71)

50.42 (9.02)

F(1,73) = 19.7

<.001

 Externalizing

59.2 (9.25)

49.7 (8.52)

F(1,73) = 24.1

<.001

 Total

62.3 (8.49)

49.40 (9.04)

F(1,73) = 42.53

<.001