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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Addict Behav. 2016 Jun 7;62:114–121. doi: 10.1016/j.addbeh.2016.06.003

Table 1.

N and Proportion of the Sample for Each Trajectory Group (N=806)

Triple Trajectory Group N Proportion of the sample
HHH (Chronic, moderate-to-heavy cigarette, alcohol, and marijuana use) 105 13.0%
DDD (Delayed/late-starting, moderate cigarette, alcohol, and marijuana use) 189 23.5%
LML (Little to no tobacco use, moderate alcohol use, and occasional marijuana use) 143 17.7%
HMN (Chronic heavy smoking, moderate alcohol use but no marijuana use) 121 15.0%
NON (Occasional alcohol use only) 248 30.8%