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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Drug Alcohol Depend. 2014 Jun 25;0:216–223. doi: 10.1016/j.drugalcdep.2014.06.025

Figure 1.

Figure 1

Selection of study sample.

*Significant substance use = Lifetime history of binge drinking OR any lifetime use of other substances greater than 50 times.

Self-report questions: Alcohol: Have you ever used alcohol? What is the most drinks you have ever had on a single occasion?

Other substance use: How many times in your life have you taken (for non-medical purposes): barbiturates, tranquilizers, stimulants/amphetamines, analgesics, inhalants, marijuana/hashish, cocaine/crack, LSD and other hallucinogens, heroin?