Concurrent validity of an Estimator of Weekly Alcohol Consumption (EWAC) based on the Extended AUDIT

摘要: Abstract Background and Aims The 3-question Alcohol Use Disorders Identification Test (AUDIT-C) is commonly employed in healthcare to screen for levels of alcohol consumption. AUDIT-C scores (0–12) have no direct interpretation do not provide information on intake, an important variable behaviour change. study aimed (a) develop a continuous metric from the Extended AUDIT-C, offering equivalent accuracy, providing estimator weekly consumption (EWAC); (b) evaluate EWAC’s bias error using Graduated-Frequency (GF) questionnaire as reference standard Design Cross-sectional diagnostic based nationally-representative survey. Settings Community-dwelling households England. Participants 22,404 household residents aged ≥16 years reporting drinking at least occasionally. Measurements Computer-assisted personal interviews consisting AUDIT GF. primary outcomes were: mean deviation Findings EWAC had positive 0.2 UK units [95% confidence interval: 0.04, 0.3] compared Deviations were skewed: while was ±11 units/week [9.8, 12.0], half participants between GF 0 ±2.1 units/week. predicted excess 14 with significantly greater area under curve (0.921 [0.917, 0.925]) than (0.871 [0.866, 0.876]) or full (0.854 [0.849, 0.860]). Conclusions https://ewac.netlify.app designed estimate answers questionnaire. Using detailed standard, met targeted tolerance. Its accuracy superior that both relation thresholds, making it reliable complement health promotion interventions. Protocol registration Dutey-Magni, PF, Sinclair, JMA, Brown, J. 2018. ‘Concurrent Validity Estimator Weekly Consumption (EWAC) Based AUDIT.’ OSF. November 12. doi:10.17605/OSF.IO/7WE4M.