Table 1.

Sample Characteristics in 297 Adolescent Patients

Characteristic		Median (Range) or Percent % (n)
Age in years		17 (13 – 19)
Male		79% (n=234)
ADHD severity score prior to treatment		39 (14 – 54)
Conduct Disorder		21% (n=96)
Randomized to OROS-MPHmedication		50% (n=149)
Pre-treatment substance use(proportion of days non-tobacco drug use in month prior to treatment)		0.46 (0.0 –1.00)
Days in treatment (by TLFB report)		112 (7 – 112)
Substances (Proportion of days of use during treatment)
Opioid		0.0 (0.0 – 0.28)
Alcohol		0.03 (0.0 – 0.90)
Cannabis		0.19 (0.0 – 1.00)
Cigarettes		0.63 (0.0 – 1.00)