The Alcohol Use Disorders Identification Test-Consumption (AUDIT-C) questionnaire demonstrated excellent test-retest reliability across different demographics and screening modalities, according to data in Alcohol Clinical & Experimental Research. Claire B. Simon, MD and colleagues collected EHR data from Kaiser Permanente Washington, which included 18,491 patients in primary care who completed two AUDIT-C screens 1-21 days apart during routine care in 2021. The researchers evaluated reliability for total scores (0-12) and a binary measure indicating unhealthy alcohol use (scores ≥3 for women, ≥4 for men). The researchers defined reliability coefficients as “excellent” if participants were above 0.75. The results demonstrated positive test-retest reliability for total scores (ICC=0.87; 95% CI, 0.87-0.87) and the binary measure of unhealthy alcohol use ( k=0.79; 95% CI, 0.78- 0.80). Reliability was good to excellent across all demographic subgroups, with slightly lower reliability among American Indian/Alaska Native (ICC=0.82; 95% CI, 0.75-0.87) and multiracial patients (ICC=0.82; 95% CI, 0.80-0.84).