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Table 6 Mean age of onset (± SD) for lifetime IED with lifetime comorbid DBD disorders

From: Comorbidity of disruptive behavior disorders and intermittent explosive disorder

DBD disorderNCS-AS reanalysisaNCS-R reanalysisaClinical research analysisa
 IED Age of onsetComorbid DBD Age of onsetIED Age of onsetComorbid DBD Age of onsetIED Age of onsetComorbid DBD
Age of onset
ADHD9.4 ± 3.36.9 ± 2.4 (t105 = 6.98, p < 0.001)11.6 ± 6.46.5 ± 1.8 (t62 = 6.28, p < 0.001)12.5 ± 5.76.3 ± 1.8 (t108 = 10.95, p < 0.001)
ODD9.8 ± 3.2 (t243 = 3.09, p < 0.001)10.3 ± 3.011.6 ± 4.310.3 ± 3.5 (t80 = 2.57, p = 0.012)12.7 ± 5.611.2 ± 3.3 (t170 = 3.36, p = 0.001)
CD9.9 ± 3.4 (t152 = 8.56, p < 0.001)12.6 ± 2.411.7 ± 4.511.6 ± 3.312.3 ± 5.410.7 ± 1.4 (t185 = 3.90, p < 0.001)
  1. aDifference between IED vs. DBD by paired T-test