Association between clinical measures of unhealthy alcohol use and subsequent year hospital admissions in a primary care population

Screening for unhealthy alcohol use in primary care may help identify patients at risk for negative health outcomes. This study examined the associations between 1) screening with the AUDIT-C (alcohol consumption) and 2) an Alcohol Symptom Checklist (symptoms of alcohol use disorder) and subsequent-year hospitalizations. This retrospective cohort study was conducted in 29 primary care clinics in Washington State. Patients were screened in routine care (10/1/2016–2/1/2019) with the AUDIT-C (0−12) and administered the Alcohol Symptom Checklist (0−11) if they had AUDIT-C score ≥ 7. All-cause hospitalizations were measured within 1 year of the AUDIT-C and Alcohol Symptom Checklist. AUDIT-C and Alcohol Symptom Checklist scores were categorized based on previously used cut-points. Of 305,376 patients with AUDIT-Cs, 5.3% of patients were hospitalized in the following year. AUDIT-C scores had a J-shaped relationship with hospitalizations, with risk for all-cause hospitalizations higher for patients with the AUDIT-C scores 9–12 (12.1%; 95% CI: 10.6–13.7%, relative to a comparison group of those with AUDIT-C scores 1–2 (female)/1–3 (male) (3.7%; 95% CI: 3.6–3.8%), adjusted for socio-demographics. Patients with AUDIT-C ≥ 7 and Alcohol Symptom Checklist scores reflecting severe AUD were at increased risk of hospitalization (14.6%, 95% CI: 11.9–17.9%) relative to those with lower scores. Higher AUDIT-C scores were associated with higher incidence of hospitalizations except among people with low-level drinking. Among patients with AUDIT-C ≥ 7, the Alcohol Symptom Checklist identified patients at increased risk of hospitalization. This study helps demonstrate the potential clinical utility of the AUDIT-C and Alcohol Symptom Checklist. •Unhealthy alcohol use increases risk for negative health outcomes.•Brief screening tools can be used to identify unhealthy alcohol use in primary care•Unhealthy alcohol use is associated with greater risk of future hospitalization