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. Author manuscript; available in PMC: 2013 Jul 15.
Published in final edited form as: Subst Abus. 2013 Jul-Sep;34(3):298–305. doi: 10.1080/08897077.2013.775092

Fig. 1. Marijuana user trajectories (T1-T4).

Fig. 1

Note. Answer options for marijuana use: never (0), a few times a year or less (1), about once a month (2), several times a month (3), once a week or more (4)