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- W3001738252 abstract "Abstract Aims Methamphetamine Use Disorder is prevalent in South Africa. This analysis uses data from a contingency management (CM) pilot study in South Africa to replicate and expand on a U.S.-based study showing that CM voucher spending was associated with drug abstinence behavior. Design Participants with methamphetamine-use disorder were enrolled in an 8-week CM trial requiring thrice weekly visits and received cash vouchers in exchange for stimulant-negative urines at each visit. Participants Participants were 33 treatment-seeking individuals with methamphetamine use disorder including 22 men (66.7%) and 11 women (33.3%) with a mean age of 34 years (S.D. = 7.7). Participants reported using methamphetamine for a mean of 11.7 years (S.D. = 4.9). Setting All study procedures took place in South Africa between August 2016 and May 2018. Measurements A time-lagged counting process Cox Proportional Hazards model for recurrent event survival analysis examined the relationship between frequency of and participant-categorized type of CM expenditures (hedonic, utilitarian, consumable or durable) and drug abstinence. Findings After controlling for severity of baseline methamphetamine use and accumulated CM earnings (proxied by cumulative negative urines), those spending CM earnings at a previous visit (“spenders”) were more likely to produce stimulant-negative urine samples subsequently, compared to those who did not (“savers”) [OR = 1.23, CI = 1.08–1.53, p = .002]. There were significantly more cumulative stimulant-negative results among spenders vs. savers, p Conclusions Abstinence outcomes are a function of CM spending in both the U.S. and South Africa. Findings of a significant relationship between contingency management spending and subsequent stimulant-negative urine samples across geographic locations provide guidance toward future work in optimizing CM efficacy." @default.
- W3001738252 created "2020-01-30" @default.
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- W3001738252 date "2020-05-01" @default.
- W3001738252 modified "2023-09-24" @default.
- W3001738252 title "Spending money to make change: Association of methamphetamine abstinence and voucher spending among contingency management pilot participants in South Africa" @default.
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- W3001738252 doi "https://doi.org/10.1016/j.jsat.2020.01.014" @default.
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