• Theresa W Kim, Jeffrey H Samet, Debbie M Cheng, Michael R Winter, Dana Gelb Safran, and Richard Saitz.
• Clinical Addiction Research and Education (CARE) Unit, Section General Internal Medicine, 91 E. Concord Street, Suite 200, Boston University Medical Center, Boston, MA 02118, USA.
• Health Serv Res. 2007 Apr 1;42(2):755-72.

BackgroundAlcohol and drug use disorders are chronic diseases that require ongoing management of physical, psychiatric, and social consequences. While specific addiction-focused interventions in primary care are efficacious, the influence of overall primary care quality (PCQ) on addiction outcomes has not been studied. The aim of this study was to prospectively examine if higher PCQ is associated with lower addiction severity among patients with substance use disorders.Study PopulationSubjects with alcohol, cocaine, and/or heroin use disorders who initiated primary care after being discharged from an urban residential detoxification program.MeasurementsWe used the Primary Care Assessment Survey (PCAS), a well-validated, patient-completed survey that measures defining attributes of primary care named by the Institute of Medicine. Nine summary scales cover two broad areas of PCQ: the patient-physician relationship (communication, interpersonal treatment, thoroughness of the physical exam, whole-person knowledge, preventive counseling, and trust) and structural/organizational features of care (organizational access, financial access, and visit-based continuity). Each of the three addiction outcomes (alcohol addiction severity (ASI-alc), drug addiction severity (ASI-drug), and any drug or heavy alcohol use) were derived from the Addiction Severity Index and assessed 6-18 months after PCAS administration. Separate longitudinal regression models included a single PCAS scale as the main predictor variable as well as variables known to be associated with addiction outcomes.Main ResultsEight of the nine PCAS scales were associated with lower alcohol addiction severity at follow-up (pConclusionCore features of PCQ, particularly those reflecting the quality of the physician-patient relationship, were associated with positive addiction outcomes. Our findings suggest that the provision of patient-centered, comprehensive care from a primary care clinician may be an important treatment component for substance use disorders.

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