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. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: Addiction. 2013 Mar 21;108(6):1084–1094. doi: 10.1111/add.12108

Figure 2.

Figure 2

Observed MJ urine levels by week and by treatment assignment, VEN-XR (N=51) vs. PBO (n=52).

* When analyzed longitudinally, there was a significant interaction between week and treatment (see Table 2). The effect of treatment was not significant in weeks 1, 2, and 4. The VEN-XR group had significantly higher THC urine levels creatinine corrected in week 6 (T372=−2.71, p-value < 0.01), week 8 (T372=−2.59, p-value = 0.01), week 10 (T372=−2.62, p-value < 0.01) and week 12 (T372=−3.84, p-value <0.01) compared to the PBO group.