The relationship between services delivered and substance use outcomes in New Mexico's Screening, Brief Intervention, Referral and Treatment (SBIRT) Initiative

Substance-using patients with disparate levels of use may benefit from SBIRT. In a real-world, multi-site rural SBIRT program, services of higher intensity and (within the BI modality) frequency were associated with greater magnitude of change in drinking behaviors. Reductions in illicit drug use, while substantial, did not differ significantly based on service variables. Future studies should identify the preferred service mix in the SBIRT model as it continues to expand.