Contingency Management Is Effective in Promoting Abstinence and Retention in Treatment Among Crack Cocaine Users in Brazil: A Randomized Controlled Trial

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dc.contributor.author Miguel, Andre Q. C. [UNIFESP]
dc.contributor.author Madruga, Clarice S. [UNIFESP]
dc.contributor.author Cogo-Moreira, Hugo [UNIFESP]
dc.contributor.author Yamauchi, Rodolfo [UNIFESP]
dc.contributor.author Simoes, Viviane [UNIFESP]
dc.contributor.author da Silva, Claudio J. [UNIFESP]
dc.contributor.author McPherson, Sterling
dc.contributor.author Roll, John M.
dc.contributor.author Laranjeira, Ronaldo R. [UNIFESP]
dc.date.accessioned 2020-08-14T13:43:56Z
dc.date.available 2020-08-14T13:43:56Z
dc.date.issued 2016
dc.identifier http://dx.doi.org/10.1037/adb0000192
dc.identifier.citation Psychology Of Addictive Behaviors. Washington, v. 30, n. 5, p. 536-543, 2016.
dc.identifier.issn 0893-164X
dc.identifier.uri https://repositorio.unifesp.br/handle/11600/57450
dc.description.abstract Crack cocaine dependence has become a severe public health problem in Brazil, and current psychosocial approaches to this problem have shown little or no effectiveness. Although contingency management is among the most effective behavioral treatments for substance use disorders, it has never been applied in the treatment of crack cocaine-dependent individuals in Brazil. The aim of this study was to evaluate the efficacy of incorporating contingency management into standard outpatient treatment for crack cocaine dependence, as well as the impact that doing so has on treatment attendance, retention in treatment, maintenance of abstinence, and the frequency of substance use. We evaluated 65 treatment-seeking, crack cocaine-dependent individuals, randomized to receive 12 weeks of standard treatment plus contingency management (STCM en
dc.description.abstract n = 33) or 12 weeks of standard treatment alone (STA en
dc.description.abstract n = 32). Those in the STCM group received monetary incentives for being abstinent, earning up to US$235.50 if they remained abstinent throughout the entire treatment period. The STCM group participants attended a mean of 19.5 (SD = 14.9) treatment sessions, compared with 3.7 (SD = 5.9) for the STA group participants (p < .01). Those in the STCM group were 3.8, 4.6, and 68.9 times more likely to be retained in treatment at weeks 4, 8, and 12 than were those in the STA group. The likelihood of detecting 4, 8, and 12 weeks of continuous abstinence was 17.7, 9.9, and 18.6 times higher in the STCM group than in the STA group (p < .05). Compared to the STA group, the STCM group submitted a significantly higher proportion of negative samples for crack cocaine, delta-9-tetrahydrocannabinol, and alcohol (p < .001) when all expected samples were included in the denominator but not when only submitted samples were considered. The average monthly cost/participant for incentives was $29.00. Contingency management showed efficacy in a sample of Brazilian crack cocaine users. The intervention holds promise for broader application in international settings. en
dc.description.sponsorship Fundacao de Amparo a Pesquisa de Sao Paulo (FAPESP)
dc.description.sponsorship Clinical Trials Network Pacific Northwest Node from the National Institute on Drug Abuse
dc.format.extent 536-543
dc.language.iso eng
dc.publisher Educational Publishing Foundation-American Psychological Assoc
dc.relation.ispartof Psychology Of Addictive Behaviors
dc.rights Acesso restrito
dc.subject crack cocaine en
dc.subject contingency management en
dc.subject behavioral treatment en
dc.subject randomized clinical trial en
dc.subject substance use in Brazil en
dc.title Contingency Management Is Effective in Promoting Abstinence and Retention in Treatment Among Crack Cocaine Users in Brazil: A Randomized Controlled Trial en
dc.type Artigo
dc.description.affiliation Fed Univ Sao Paulo UNIFESP, INPAD, Dept Psychiat & Med Psychol, Sao Paulo, Brazil
dc.description.affiliation Fed Univ Sao Paulo UNIFESP, Dept Psychiat & Med Psychol, Sao Paulo, Brazil
dc.description.affiliation Washington State Univ, Program Excellence Addict Res, Pullman, WA 99164 USA
dc.description.affiliationUnifesp Fed Univ Sao Paulo UNIFESP, INPAD, Dept Psychiat & Med Psychol, Sao Paulo, Brazil
dc.description.affiliationUnifesp Fed Univ Sao Paulo UNIFESP, Dept Psychiat & Med Psychol, Sao Paulo, Brazil
dc.description.sponsorshipID FAPESP: 2011/01469-7
dc.description.sponsorshipID FAPESP: 2013/04138-7
dc.description.sponsorshipID Clinical Trials Network Pacific Northwest Node from the National Institute on Drug Abuse: 5 U10 DA013714-10
dc.identifier.doi 10.1037/adb0000192
dc.description.source Web of Science
dc.identifier.wos WOS:000383173300002
dc.coverage Washington
dc.citation.volume 30
dc.citation.issue 5



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