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Table 1 Demographics of Children and Adolescents Presenting with ADHD Across Clinical Trials by Region

From: Baseline values from the electrocardiograms of children and adolescents with ADHD

  North American (n = 5289) Non-North American (n = 641)
Country of origin: (n,%)   
   United States 5046 (95.4)  
   Canada 135 (2.6)  
   Puerto Rico 108 (2.0)  
   European   490 (76.4)
   South Africa   71 (11.1)
   Australia   47 (7.3)
   Israel   33 (5.1)
Sex: n (%) Male 4013 (76) 572 (89)
Age: Mean years, SD 10.7 (2.6) 10.2 (2.3)
*Weight (kg): Mean, SD 40.5 (15.1) 37.4 (12.7)
   Percentile (Mean, SD) 60.9 (29.2) 58.9 (28.9)
*Height (cm): Mean, SD 142.4 (16.8) 142.0 (14.5)
   Percentile (Mean, SD) 51.4 (29.2) 57.8 (28.7)
Body Mass Index: Mean, SD 19.2 (4.0) 18.1 (3.4)
% Caucasian n (%) 4008 (76) 619 (97)
  1. * Sample sizes for weight, height, and body mass were slightly lower