AST: A simplified 3-item tool for managing alcohol withdrawal

Samuel B. Holzman, Darius A Rastegar

Research output: Contribution to journalArticlepeer-review

Abstract

Aims: This study compared the Glasgow Modified Alcohol Withdrawal Scale (GMAWS) and a newly devised 3-item "Anxiety Sweats Tremor" Scale (AST) to the Revised Clinical Institute Withdrawal Assessment Scale (CIWA-Ar) - the standard of care for symptom-triggered management of alcohol withdrawal syndrome. Methods: Our study took place over 2 separate 1-week observational periods, and included 332 serial evaluations from 85 unique patients. All study participants were treated per hospital protocol based on CIWA-Ar, with supplemental scoring initially by GMAWS and later by AST in tandem. Internal consistency, interitem correlation, and operational characteristics were explored. Results: Median CIWA-Ar score across both phases was 6 (range 0-13), with a median GMAWS score of 2 (range 0-5) and an AST score of 3 (range 0-7). The internal consistency of CIWA-Ar and GMAWS were both poor, with Cronbach alpha scores of 0.46 (n=156) and 0.41 (n=156), respectively. The internal consistency of the AST scale was significantly better, with a Cronbach alpha of 0.68 (n=176). AST identified individuals with CIWA-Ar ≥8 with an area under the receiver-operating characteristic curve of 0.83 (95% confidence interval 0.77-0.89), compared with 0.81 (95% confidence interval 0.74-0.88) for GMAWS. An AST score of ≥3 (out of a possible 9) predicted CIWA-Ar ≥8, with a sensitivity of 93% and a specificity of 63%, whereas the GMAWS had a sensitivity and specificity of 100% and 12%, respectively, based on previously defined cut-offs. Conclusions: A simple 3-item scale demonstrated good internal consistency and reliably identified individuals experiencing significant alcohol withdrawal. This scale needs to be tested in other settings and among patients with a broader spectrum of withdrawal severity.

Original languageEnglish (US)
Pages (from-to)190-195
Number of pages6
JournalJournal of Addiction Medicine
Volume10
Issue number3
DOIs
StatePublished - 2016

Keywords

  • alcohol withdrawal
  • alcohol-related disorders
  • benzodiazepines
  • substance withdrawal syndrome
  • symptom-triggered therapy

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Pharmacology (medical)

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