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Table 3 Differences between healthy controls and adults with ADHD on Conners' CPT-II attention test

From: Hyperactivity persists in male and female adults with ADHD and remains a highly discriminative feature of the disorder: a case-control study

Measures Controls mean ADHD mean ANCOVA* Group F Effect Size Cohens d’ ROC Area
  [95% CI] [95% CI] †q value [95% CI] [95% CI]
Errors of Omission 1.95 1.79 0.15 0.05 0.47
  [0.91-2.98] [0.93-2.65] p>0.8 [-0.41-0.39] [0.45-0.60]
Errors of Comission 8.70 12.26 8.30 0.60 0.67
  [7.26-10.15] [10.11-14.42] p<0.03 0.17-1.09 0.58-0.77
Correct Reaction Time (RT) 385.2 389.3 0.01 0.07 0.52
  [370.5-399.9] [369.8-408.9] p>0.9 [-0.34-0.51] [0.40-0.64]
RT Standard Error (RT SE) 5.31 6.35 8.13 0.55 0.63
  [4.86-5.77] [5.65-7.05] p<0.03 [0.08-0.86] 0.53-0.74
Variability in RT by Blocks 6.76 8.65 7.55 0.48 0.63
  [5.87-7.65] [7.14-10.16] p<0.03 [0.08-0.86] [0.53-0.74]
Discriminability (d prime) 0.96 0.74 3.95 0.49 0.66
  [0.84-1.07] [0.61-0.88] p<0.09 [0.09-0.96] [0.58-0.75]
Response Bias (beta) 0.91 0.68 1.45 0.23 0.57
  [0.62-1.20] [0.45-0.92] p<0.3 [-0.17-0.57] [0.58-0.75]
Perseverative errors 0.19 0.71 7.07 0.46 0.61
  [0.03-0.36] [0.19-1.23] p<0.03 [0.11-0.76] [0.56-0.66]
Change in RT by Blocks 0 0 0.02 0.08 0.51
  [-0.007-0.007] [-0.012-0.017] p<0.8 [0.36-0.52] [0.46-0.56]
Change in RT SE by Blocks 0 0 0.02 0.02 0.5
  [-0.021-0.014] [-0.034-0.023] p<0.9 [-0.04-0.46] [0.45-0.56]
Change in RT by ISI 0.05 0.07 4.5 0.43 0.61
  [0.035-0.063] [0.056-0.086] p<0.08 [0.05-0.90] [0.58-0.64]
Change in RT SE by ISI 0.01 0.06 4.41 0.39 0.6
  [-0.011-0.039] [0.015-0.095] p<0.08 [-0.02-0.80] [0.55-0.66]
  1. Main effect of group. Effects of Age and Gender were not significant for any measure after correction for multiple comparisons.
  2. †q value = p value adjusted for multiple comparisons using the False Discovery Rate method of Benjamini and Hochberg.