4.7 Review

Consistency between self-reported alcohol consumption and biological markers among patients with alcohol use disorder - A systematic review

Journal

NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS
Volume 124, Issue -, Pages 370-385

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neubiorev.2021.02.006

Keywords

Alcohol use disorder; Alcohol consumption; Biomarker; Self-report; Treatment

Funding

  1. Lundbeck Foundation, Denmark [R155-2012-11282]
  2. Region of Southern Denmark, Denmark [D.NielsenA2716 1.r.18]

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Studies have shown inconsistencies between self-reported alcohol consumption and biomarkers among patients in treatment for AUD. Correlations between self-reported alcohol consumption and biological markers were strongest for intermediate-term direct markers, ranging from moderate to strong.
Background: No systematic review has yet examined the consistency between self-reports of alcohol consumption and alcohol biomarkers among patients in treatment for alcohol use disorders (AUD). Therefore, we aimed to provide an overview of the consistency between self-reported alcohol intake and biomarkers among patients in treatment for AUD. Methods: The electronical databases MEDLINE, PsycINFO, EMBASE, Cochrane Database of Systematic Reviews (CDSR) and CENTRAL were searched for all original studies that examined the validity of self-reported alcohol consumption using a biological marker in samples of patients with AUD. Eligible studies were included in a qualitative synthesis of the outcomes. Quality assessment was conducted with the quality assessment tool for Observational Cohort and Cross-sectional studies, developed by The National Heart, Lung and Blood Institute. Results: The search identified 7672 hits, and 11 papers comprising 13 eligible studies were included. All the identified studies revealed inconsistencies between self-reporting and biomarkers. Under-reporting was the most common type of inconsistency across short-, intermediate-and long-term biomarkers. For short-term markers, under-reporting was indicated in 7 studies (n = 15-585) in a range from 5.5%-56.0% of the patients, and over reporting in 2 studies (n = 34-65) in a range from 5.9%-74.1%. Only under-reporting was reported for intermediate-term, direct markers and was indicated in 2 studies (n = 18-54) in a range from 5.0%-50.0% of the patients. Although the results for long-term biomarkers were not reported consistently across the studies, underreporting was indicated in 3 studies (n = 73-1580) in a range from 0.1%-40.0% of the patients, and over reporting in 2 studies (n = 15-1580) in a range from 13.0%-70.6%. Correlations between self-reported alcohol consumption and biological markers were strongest for the intermediate-term direct markers, ranging from moderate to strong. For short-term and long-term markers, the correlations were mostly weak. Most of the studies were quality rated as fair. Conclusion: The findings indicate that inconsistency between self-reported alcohol consumption and biomarkers may occur in a considerable proportion of patients with AUD. However, further studies applying more sensitive, specific, and easily assessable biological markers are warranted to confirm this preliminary synthesis. PROSPERO registration no.: CRD42018105308

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