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Table 1 Descriptive data for ADHD and ASD samples

From: Parent-reported and clinician-observed autism spectrum disorder (ASD) symptoms in children with attention deficit/hyperactivity disorder (ADHD): implications for practice under DSM-5

  ADHD ASD    
  (n = 48) (n = 164)    
  Mean (SD) Mean (SD) t df p value
Age (years) 9 (4) 9 (3) 0.01 210 0.99
VIQa 106 (16) 103 (18) 0.75 208 0.45
NVIQa 105 (14) 104 (17) 0.21 207 0.83
  n (%) n (%) χ 2 df p value
Males 38 (79) 138 (84) 0.65 1 0.42
ADOS Mod 3 41 (85) 145 (88) 0.31 1 0.58
Site      
 UMACC 29 (60) 70 (43) 26.90 2 <0.001
 UCDDC 9 (19) 88 (54)
 CADB 10 (21) 6 (4)
  1. ADHD attention deficit/hyperactivity disorder, ASD autism spectrum disorder, CADB Center for Autism and the Developing Brain in New York, df degrees of freedom, UCDDC University of Chicago Developmental Disorders Clinic, UMACC University of Michigan Autism and Communications Disorders Center
  2. aTwo ADHD participants were missing VIQ information and three additional ADHD participants were missing NVIQ information