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. Author manuscript; available in PMC: 2014 Apr 17.
Published in final edited form as: J Adolesc. 2009 Jul 28;33(3):449–461. doi: 10.1016/j.adolescence.2009.06.005

Figure 2.

Figure 2

Growth curves from age 13 to 20 for substance abuse with 95% confidence intervals. Solid lines represent estimated growth curves for developmental trajectory groups. Dashed lines represent the lower 95% confidence interval and dashed-dot lines represent the upper 95% confidence interval.