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. Author manuscript; available in PMC: 2011 Nov 1.
Published in final edited form as: Am J Addict. 2010 Sep 21;19(6):481–489. doi: 10.1111/j.1521-0391.2010.00076.x

TABLE 2.

Outcome summary by treatment group

Variable Atomoxetine Placebo Test p-value
Marijuana Dependence
Primary Outcome Mean SE Mean SE
   Estimated (LSMean) Week 12 Self-Reported Use{b} 2.17 0.34 1.84 0.34 F Test (1, 35) 0.44
Secondary Efficacy Outcomes
   Self-reported Mean SD Mean SD
   % Days reporting use{a} 60.1% 31.5% 68.1% 31.3% W ilcoxon Rank Sum 0.46
N % N %
   Reduced days using relative to baseline 16 84.2% 13 68.4% Fisher's Exact 0.45
   Reduced amount using per using day relative to baseline 14 73.7% 16 84.2% Fisher's Exact 0.69
   Urine Drug Screens
N % N %
   % of Samples Positive, as observed{c} 125 85.6% 105 83.3% N/A N/A
   GEE Model-based estimate, % (SE) 87.3% 6.5% 85.3% 6.3% GEE Wald Test 0.83
Clinician Global Impression Mean SD Mean SD
   Improvement Rating, LOCF 2.84 1.12 2.95 1.08 W ilcoxon Rank Sum 0.65
   Change in severity rating (last obs. - baseline) −1.28 1.23 −1.33 1.46 W ilcoxon Rank Sum 1.00
Mean SD Mean SD
Marijuana Craving Questionnaire, change from baseline −13.39 13.28 −17.05 15.97 W ilcoxon Rank Sum 0.56
ADHD Mean SD Mean SD
   WRAADS, change from baseline & longitudinal −15.05 10.96 −11.05 7.59 W ilcoxon Rank Sum 0.23
   CAARS-SELF, change from baseline & longitudinal −12.65 7.60 −10.16 7.73 W ilcoxon Rank Sum 0.34
   CGI Improvement, LOCF 2.63 0.68 3.26 0.93 W ilcoxon Rank Sum 0.02
   CGI Change in severity rating (last obs. - baseline) −1.22 0.94 −0.89 1.28 W ilcoxon Rank Sum 0.21
{a}

For measures modeled longitudinally, the beta coefficient for the treatment by time interaction is reported.

{b}

Estimated mean is for the amount using per using day over the last seven days of self-reported use (last observation carried forward) from an ANCOVA model that adjusted for amount using per using day during the 90 days prior to the study.

{c}

A total of 272 UDS were collected, n=146 for the atomoxetine group, n=126