Examining the Effectiveness of Contingency Management Therapy (CM) on Consumption in Patients Dependent to Methamphetamine, a Controlled Trial

Abstract

Introduction: Contingency management therapy is one of the common therapies in field of addiction that shapes the behavior in form of using positive reinforcements such as coupon, goods and services and has a kind of behaviorism basis. Purpose: This study is conducted with the aim of evaluating the effectiveness of contingency management intervention. Methods: This study was a controlled trial in which fifty men (N=50) were selected voluntarily and were randomly assigned into Contingency management group and control group with 25 individuals in each group (n=25). Contingency management therapy was presented to the participants of experimental group in terms of giving coupon to negative test of urine in a period of twelve weeks and participants of control group just received the base routine treatment. In addition, Brief behavioral compliance enhancement treatment in order to create an atmosphere of support to treatment adherence was provided to the participants. The urine test was taken of participants two times per week with assuming threshold of 300 Ng/ml in milliliter In order to assess the extent of methamphetamine use. Data were analyzed using ANOVA with repeated measure. Results: the results showed that contingency management therapy has significant effect on reducing the consumption. Conclusion: These findings also have the practical aspects in the field of addiction treatment, once again confirms the efficacy of clinical evidence in the treatment of addiction in the field of behavioral