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Abstract
Psychosocial treatments for methamphetamine dependence are of limited effectiveness. Thus, a significant need exists for add-on therapy for this substance user disorder. The aim of this study was to develop and test a novel text messaging intervention for use as an adjunct to cognitive behavioral group therapy for methamphetamine users. Text messaging has the potential to support patients in real-time, around the clock. We convened two meetings of an expert panel, held three focus groups in current and former users, and conducted 15 semi-structured interviews with in-treatment users in order to develop a fully automated, cognitive behavioral therapy-based text messaging intervention. We then conducted a randomized, crossover pre-test in five users seeking treatment. Participants’ ratings of ease of use and functionality of the system were high. During the pre-test, we performed real-time assessments via text messaging on daily methamphetamine use, craving levels, and the perceived usefulness of messages; 79% of scheduled assessments were collected. The odds of messages being rated as “very” or “extremely” useful were 6.6 times (95% CI: 2.2, 19.4) higher in the active vs. placebo periods. The intervention is now ready for testing in randomized clinical trials.
Acknowledgments
The authors wish to thank Michael Cai for his assistance with programming the intervention, as well as Drs. David V. Glidden and Mark Pletcher, NLTC staff, and our participants. This study was supported by National Institutes of Health (NIH) grant R01DA024714 and a gift from Emily G. Kahn. The contents of this article are solely the responsibility of the authors and do not necessarily represent the official views of the NIH.