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Table 1 Description of Sample: Means and Standard Deviationsa

From: Cognition in anxious children with attention deficit hyperactivity disorder: a comparison with clinical and normal children

  Anxiety Only (n = 52) Comorbid for ADHD* (n = 35) ADHD Only (n = 21)** Normal Controls (n = 35) Total (n = 143)
Age in Years 9.42 (1.23) 9.82 (1.27) 9.60 (1.43) 9.71 (1.32) 9.61 (1.28)
Socioeconomic Status (Hollingshead Index [54]) 48.45 (12.21) 46.56 (15.46) 44.22 (18.36) 53.92 (8.85) 48.19 (13.61)
Gender (% Males) 66% 74% 81% 63% 69%
Handedness (% Right vs. Left/Mixed) 67% 53% 70% 74% 64%
DSM-IV Conners' ADHD Symptom Index (t-score) Mother 57.08 (11.09) 69.00 (12.63) 69.80 (7.00) 49.50 (7.67)3 58.86 (12.81)
Report Teacher Report (n = 69) 55.15 (12.35) 61.11 (18.81) 74.33 (11.68) 50.08 (5.87)2 56.01 (14.60)
Multidimensional Anxiety Scale for Children (t-score) 53.12 (1.08) 54.97 (13.24) 50.10 (11.00) 46.23(10.09)2 51.52 (11.82)
  1. a standard deviations are shown in brackets; 1 p < .05, 2 p < .01, 3 p < .001
  2. * 19 Inattentive Type; 16 Combined Type
  3. ** 11 Inattentive Type; 10 Combined Type