The goal of this clinical trial is to use contingency management (CM) as an intervention tool to address methamphetamine use. The main objectives are to: * Gather effectiveness data on a pilot a CM program for participants in Hawaii who use methamphetamine following hospitalization due to traumatic injury * To assess participant perspectives on engaging with a CM program based at a Level 1 Trauma Center. Researches will assess both patient-reported and biologically-confirmed medium-term program effectiveness and conduct qualitative interviews with participants post-program. Participants will: * Visit a follow-up clinic up to three times per week to complete urinalysis following discharge from the trauma unit * Complete Treatment Effectiveness Assessments at 6 and 12-weeks * Engage in a qualitative interview at the end of the CM program
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TEA Outcomes at 6 and 12-weeks
Timeframe: From enrollment to 6 and 12-weeks
Nicholas R Schumann, Clinical Psychologist