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Table 2 Characteristics of the clinical sample

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

  ADHD (n = 50)a Clinical controls (n = 49)a P d
Age (mean ± SD) 37.7 ± 10.3 37.8 ± 11.8 NS  
Gender (m/f) 28/22 23/26 NS  
WURS (mean ± SD) 52.0 ± 18.8 28.9 ± 15.3 <0.001 1.34
ASRS (mean ± SD) 50.0 ± 12.2 31.6 ± 12.7 <0.001 1.48
HADS
 Depression (mean ± SD) 4.7 ± 3.7 5 .2 ± 3.9 NS −0.13
 Anxiety (mean ± SD) 9.9 ± 4.5 9.1 ± 4.8 NS 0.17
MADRS (mean ± SD) 13.4 ± 7.2 13.9 ± 8.1 NS 0.07
MDQ + (%) b 47 30 NS  
CT + (%)c 59 52 NS  
Bipolar disorder (%) 30 42 NS  
Unipolar depression (%) 32 29 NS  
Anxiety disorder (%) 38 60 0.026  
Alcohol or drug abuse (%) 26 13 NS  
Other diagnoses (%) 28 29 NS  
  1. Student’s t-test or Chi square test were used to compare the two groups
  2. a The number of patients in each group varies somewhat for the different questionnaires and tests (WURS 48/45, ASRS 49/45, HADS 47/45, MADRS 49/47, CT 49/46)
  3. b Positive score on the Mood Disorder Questionnaire (MDQ)
  4. c Positive score on the scale for Cyclothymic temperament (CT)