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Table 3 Patients with ADHD compared to clinical controls

From: Linear and non-linear analyses of Conner’s Continuous Performance Test-II discriminate adult patients with attention deficit hyperactivity disorder from patients with mood and anxiety disorders

I Traditional CPT-II results
  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
II Analyses based on extraction of raw data from the CPT-II test
  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
  1. a MannWhitney U-test, t-test for the other data