Table 2

Frequency of ADHD subtypes and symptoms of inattention and hyperactivity/impulsivity in each of the ASD subtypes

Autistic disorder

(N=5)

Asperger's disorder

(N=67)

PDD NOS

(N=50)

AS – PDD NOSa

Total

(N=122)

Male

(N=82)

Female

(N=40)

Male – Femalea


N

%

N

%

N

%

χ2

(df = 1)

p

N

%

N

%

N

%

χ2

(df = 1)

p


Inattentive subtype

2

40

8

12

11

22

2.13

0.21

21

17

14

17

7

18

0.00

1.00

Hyperactive/impulsive subtype

0

0

5

8

3

6

0.10

1.00

8

7

5

6

3

8

0.09

0.72

Combined subtype

0

0

11

16

12

24

1.04

0.35

23

19

16

20

7

18

0.07

1.00

Any ADHD

2

40

24

36

26

52

3.06

0.09

52

43

35

43

17

43

0.00

1.00


AS – PDD NOSb

Male – Femaleb


Z

p

Z

p


Median and range of inattentive criteria met

4

(0–7)

3

(0–8)

6

(0–9)

-2.52

0.01

4

(0–9)

4

(0–9)

3

(0–9)

-0.49

0.63

Median and range of hyperactive/impulsive criteria met

2

(0–7)

1

(0–9)

3 (0–9)

-2.69

0.007

2

(0–9)

2

(0–9)

2

(0–9)

-0.89

0.37


aFisher's exact χ2 test; bMann-Whitney U test

Hofvander et al. BMC Psychiatry 2009 9:35   doi:10.1186/1471-244X-9-35

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