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Table 2 Selected Comorbidities/Conditions

From: Patient characteristics, comorbidities, and medication use for children with ADHD with and without a co-occurring reading disorder: A retrospective cohort study

Comorbidity ADHD ADHD + RD P Value
  N % N %  
Anxiety Disorders 1227 1.3 4 1.5 0.580
Bipolar/Mania 6244 6.4 25 9.4 0.043
Conduct Disturbance 10984 11.2 41 15.5 0.030
Depression 9653 9.9 38 14.3 0.015
Learning Disorders 3251 3.3 34 12.8 < 0.001
Eating Disorders 134 0.1 1 0.4 0.306
Personality Disorders 120 0.1 0 0.0 1.000
Psychotic Disorders 869 0.9 5 1.9 0.085
Seizure Disorders 1097 1.1 5 1.9 0.239
Sleep Disorders 1866 1.9 1 0.4 0.069
Tics/Tourette's 689 0.7 0 0.0 0.272
  1. All comorbidities examined from index date through end of post-period.
  2. Based upon univariate analyses with chi-square tests for variables with counts of at least 5 and Fischer's exact test if any cell had less than 5 observations.