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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Drug Alcohol Depend. 2009 Aug 31;105(3):240–247. doi: 10.1016/j.drugalcdep.2009.07.009

Figure 2.

Figure 2

GEE model of marijuana positive urine drug tests from intake to 9 months post treatment. Circles and squares represent observed percentages for the CONTROL and EXP conditions, respectively. The estimated cubic curves for each treatment condition are displayed. EXP=Experimental condition; CONTROL=Control condition; UA=Urinalysis