Identifying Aboriginal-specific AUDIT-C and AUDIT-3 cut off scores for at-risk, high-risk and likely dependent drinkers using measures of agreement with the 10-item Alcohol Use Disorders Identification Test

Bianca Calabria, Anton Clifford, Anthony P Shakeshaft, Katherine M Conigrave, Lynette Simpson, Donna Bliss, Julaine Allan

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)
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Abstract

Background: The Alcohol Use Disorders Identification Test (AUDIT) is a 10-item alcohol screener that has been recommended for use in Aboriginal primary health care settings. The time it takes respondents to complete AUDIT, however, has proven to be a barrier to its routine delivery. Two shorter versions, AUDIT-C and AUDIT-3, have been used as screening instruments in primary health care. This paper aims to identify the AUDIT-C and AUDIT-3 cutoff scores that most closely identify individuals classified as being at-risk drinkers, high-risk drinkers, or likely alcohol dependent by the 10-item AUDIT. Methods: Two cross-sectional surveys were conducted from June 2009 to May 2010 and from July 2010 to June 2011. Aboriginal Australian participants (N?=?156) were recruited through an Aboriginal Community Controlled Health Service, and a community-based drug and alcohol treatment agency in rural New South Wales (NSW), and through community-based Aboriginal groups in Sydney NSW. Sensitivity, specificity, and positive and negative predictive values of each score on the AUDIT-C and AUDIT-3 were calculated, relative to cutoff scores on the 10-item AUDIT for at-risk, high-risk, and likely dependent drinkers. Receiver operating characteristic (ROC) curve analyses were conducted to measure the detection characteristics of AUDIT-C and AUDIT-3 for the three categories of risk.RESULTS: The areas under the receiver operating characteristic (AUROC) curves were high for drinkers classified as being at-risk, high-risk, and likely dependent. Conclusions: Recommended cutoff scores for Aboriginal Australians are as follows: at-risk drinkers AUDIT-C?=?5, AUDIT-3?=?1; high-risk drinkers AUDIT-C?=?6, AUDIT-3?=?2; and likely dependent drinkers AUDIT-C?=?9, AUDIT-3?=?3. Adequate sensitivity and specificity were achieved for recommended cutoff scores. AUROC curves were above 0.90.
Original languageEnglish
Article number17
Pages (from-to)1-12
Number of pages12
JournalAddiction science & clinical practice
Volume9
DOIs
Publication statusPublished - 2014

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