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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Drug Alcohol Depend. 2016 Oct 17;169:68–72. doi: 10.1016/j.drugalcdep.2016.10.009

Figure 1.

Figure 1

Delay Discounting Scores by Primary Opioid. *p<.05; significance tests reflect univariate ANOVA comparing the natural log of k scores among the 3 groups