Table 3 Patients with ADHD compared to clinical controls

ADHD (n = 50)

Clinical controls (n = 49)

P

d

Reaction time

386 ± 102

390 ± 74

NS

−0.04

Omissions (%)

3.5 ± 5.0

0.8 ± 1.1

0.001

0.74

Commisions (%)

55.5 ± 24.2

35.0 ± 18.6

< 0.001

0.95

Variability

14.9 ± 14.2

6.6 ± 4.2

< 0.001

0.79

ADHD Confidence Index

65.0 ± 21.8

44.5 ± 20.3

< 0.001

0.97

ADHD (n = 42)

Clinical controls (n = 46)

P

d

Reaction time

380 ± 103

389 ± 75

NS

0.01

SD (% of mean)

33.1 ± 11.5

24.0 ± 8.0

< 0.001

0.93

RMSSD (% of mean)

40.0 ± 16.2

28.9 ± 10.8

< 0.001

0.81

Sample entropy

1.57 ± 0.25

1.77 ± 0.20

< 0.001

−0.89

Symbolic dynamics

76.6 ± 16.2

89.0 ± 16.2

0.001

−0.77

Skewness

2.78 ± 2.52

1.91 ± 2.37

0.011 ^a

0.36