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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Schizophr Res. 2016 Jan 17;171(1-3):62–67. doi: 10.1016/j.schres.2016.01.015

Figure 1. Marijuana Use Trajectories.

Figure 1

Legend: Marijuana use thresholds: (ln(1+amount): 0=0 joints/year, 2=6.49 joints/year (“occasional use”), 4=53.6 joints/year (“weekly use”), 6=402.4 joints/year (“daily use”); Error bars: 95% CI