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. Author manuscript; available in PMC: 2009 Apr 1.
Published in final edited form as: Addict Behav. 2007 Nov 17;33(4):593–604. doi: 10.1016/j.addbeh.2007.11.009

Figure 1.

Figure 1

Schematic diagram of mediation analysis assessing whether abstinence from opiate and cocaine use mediated the relationship between CM intervention and HIV risk behavior scores.