CHESS Mobile Health, Inc.

The goal of this clinical trial is to evaluate efficacy of our enhanced version of the CHESS Health eIntervention in a clinical setting for those with moderate risk drug or alcohol use and those at high risk or with Substance Use Disorder (SUD) as measured by the ASSIST and the AUDIT assessment tools. The clinical trial is designed to determine whether SBIRT/eIntervention is significantly more effective than SBIRT/Treatment as usual (TAU) as delivered in a primary care setting. While it is not feasible or practical to individually test all components and features of the planned eIntervention, this design will permit testing of efficacy for reduction of substance use in both risk groups and increased enrollment in treatment for the high risk/SUD group in the SBIRT/eIntervention cohorts compared to the SBIRT/TAU cohorts. Note that the investigators are not including a screening/assessment only or other control condition, as the purpose of this clinical trial is not to test the efficacy of SBIRT itself, but rather to test whether SBIRT/eIntervention improves outcomes and successful referral relative to SBIRT/TAU delivery alone.