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. Author manuscript; available in PMC: 2019 Oct 1.
Published in final edited form as: Drug Alcohol Depend. 2018 Aug 18;191:215–222. doi: 10.1016/j.drugalcdep.2018.06.037

Table 2.

Descriptives for Major Study Variables

Variable ICC Mean (SD) Median Range
Age .26 21.07 (2.37) 20.88 16–27
Relationship Involvement .19 .53 (.50) 1.00 0–1
Cigarette Use - 2.54 (4.13) .00 0–17
Alcohol Use - 57.10 (101.16) 15.00 0–540
Marijuana Use - 35.23 (59.63) 2.00 0–191
Illicit Drug Use - .12 (.32) .00 0–1

ICC = intra-class correlation. ICCs are not presented for count or binary variables. Descriptive statistics are based on Winsorized count variables.