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. Author manuscript; available in PMC: 2018 Mar 6.
Published in final edited form as: Subst Abus. 2017 Sep 15;39(1):39–45. doi: 10.1080/08897077.2017.1363121

Figure 1.

Figure 1

Developmental Trajectories of Cannabis Use Extending from Adolescence to age 36

Note. Answer options for cannabis use: 0 = never; 1 = a few times a year or less; 2 = about once a month; 3 = several times a month; 4 = once a week or more