Table 1.

Prevalence^a of Potentially Traumatic Events (PTE) and Lifetime Illicit Drug Use Among Adolescents in the National Comorbidity Survey–Adolescent Supplement (N=9,956)

	Item	% (SE)
Parent substance use problems		19.19 (0.89)
Potentially traumatic events before age 11	Interpersonal violence	11.06 (0.63)
	Accident	18.16 (0.73)
	Witnessing/network Event	14.61 (0.66)
	Other/Non-disclosed Event	3.85 (0.25)
	Any PTE	35.60 (0.88)
	One PTE	23.33 (0.57)
	Two PTEs	7.67 (0.54)
	Three or more PTEs	4.48 (0.31)
Lifetime drug use	Marijuana	22.44 (1.44)
	Cocaine	2.29 (0.33)
	Nonmedical Prescription Drugs	5.11 (0.44)
	Other drugs	3.07 (0.42)
	Multiple illicit drugs	6.31 (0.59)

NOTE: Interpersonal violence includes physical abuse by caregiver, physical assault by someone else, mugged, raped, sexually assaulted, stalked, kidnapped, or domestic violence exposure. Traumatic accidents include car accident, other serious accident, natural or man-made disaster, physical illness, toxic chemical exposure, or accidentally injured someone. Network or witnessing events include unexpected death of a loved one, traumatic experience of a loved one, or witnessing injury or death. Other events include events not listed and undisclosed events.

^aWeighted percent (standard error).