Variable

ADHD

PDD

P^c

n

n (%) or M (SD)

n

n (%) or M (SD)

Number of subjects

21 (100)

64 (100)

^**

Male

10 (47.6)

45 (70.3)

^**

Female

11 (52.4)

19 (29.7)

ns

Age at diagnosis^a

21

32.76 (9.74)

64

17.91 (14.39)

^**

Male

10

28.60 (10.35)

45

15.09 (13.70)

^**

Female

11

36.55 (7.75)

19

24.58 (14.14)

^*

Age at answering^b

21

36.29 (9.49)

64

27.53 (8.46)

^**

Male

10

31.50 (9.12)

45

26.27 (8.19)

ns

Female

11

40.64 (7.85)

19

30.53 (8.53)

^**

Verbal IQ

20

99.15 (10.35)

60

102.20 (14.61)

ns

Male

10

96.90 (12.29)

42

103.33 (15.19)

ns

Female

10

101.40 (8.00)

18

99.56 (13.18)

ns

Performance IQ

20

96.70 (14.10)

60

98.38 (15.56)

ns

Male

10

90.70 (17.88)

42

98.62 (16.15)

ns

Female

10

102.70 (4.45)

18

97.83 (14.51)

ns

Full scale IQ

21

98.29 (11.82)

64

100.73 (13.29)

ns

Male

10

92.30 (12.46)

45

102.04 (13.21)

^*

Female

11

103.73 (8.45)

19

97.63 (13.31)

ns