Validation of the alcohol use disorders identification test in a Danish hospital setting.

Background: Early identification of potential alcohol-problems is central for timely intervention and treatment referral. The Alcohol Use Disorders Identification Test (AUDIT) and AUDIT-Consumption (AUDIT-C) serve as globally recognized and validated screening tools for this purpose. We aimed to evaluate the diagnostic validity of internationally recommended AUDIT cut-off scores ≥ 8, ≥16, ≥ 20, and AUDIT-C cut-off scores ≥ 4, ≥5 using the Danish language versions of questionnaires in a hospital setting.

Methods: Questionnaire data were collected from 2/15/2023, to 4/27/2023 at the Department of Gastroenterology and Hepatology, Odense University Hospital, Denmark. We tested the World Health Organization's recommended AUDIT cut-offs: ≥8 for hazardous use, ≥ 16 suggestive of dependence, ≥ 20 high likelihood of dependence, along with AUDIT-C ≥ 4 and ≥ 5 using the following reference standard: Danish low-risk drinking guidelines (≤ 10 standard drinks/week) for hazardous use and self-reported ICD-10 alcohol dependence criteria for alcohol dependence. Analyses included ROC curves, AUC, sensitivity, specificity, predictive values, and agreement.

Results: Three hundred patients participated, mean age 52 years (SD 17.4, median 54) and 51.3% males. Mean AUDIT score was 4.5 (SD 5.8, median 3) with fourteen (4.7%) meeting at least three self-reported ICD-10 criteria for alcohol dependence. The prevalence of hazardous use was 10.7%. AUDIT ≥ 8 exhibited a sensitivity of 56% (95% CI 40.6-73.6) and specificity 91% (95% CI 87.8-94.5) for detecting hazardous use. Against at least three self-reported ICD-10 criteria for alcohol dependence, AUDIT cut-off ≥ 16 showed a sensitivity of 85% (95% CI 66.1-98.2) with 97% specificity (95% CI 96.0-99.2), while cut-off ≥ 20 had a sensitivity of 71% (95% CI 49.2-91.6) with 99% specificity (95% CI 98.1-99.9). The AUDIT-C cut-offs ≥ 4 and ≥ 5 exhibited low positive predictive values in detecting hazardous use (30.8% for ≥ 4 and 36.8% for ≥ 5) and dependence (13.5% for ≥ 4 and 18.4% for ≥ 5) and demonstrated a specificity ranging from 68.5 to 82.1% with negative predictive values from 98.2 to 100%.

Conclusion: In Danish gastroenterology and hepatology departments, the AUDIT and AUDIT-C may be used to identify patients who are unlikely to have an alcohol problem, while positive screen results should be carefully considered and followed by more exhaustive assessment.