A comparison of self report measures of alcohol use in a rural and remote road safety study
Steinhardt, Dale A., Sheehan, Mary C., & Siskind, Victor (2006) A comparison of self report measures of alcohol use in a rural and remote road safety study. In 37th Annual Public Health Association of Australia Conference, 25-27 September 2006, Sydney, NSW.
Interviews were conducted in Northern Queensland with serious injury patients hospitalised for 24 hours or more after a rural road crash. Further comparison data was collected from roadside interviews with drivers within the study area. Alcohol use data was collected from each respondent through the administration of the 10-item Alcohol Use Disorders Identification Test (AUDIT), from which its three question short form (AUDIT-C) was also calculated. Questions regarding self-report alcohol use in standard drinks in the 24 hours prior to the crash or interview were also recorded. Both audit measures were assessed in regards to their internal reliability and checked as to their content validity against one another. The concurrent validity of the measures was also compared by relating each in turn to self-report measures of whether a participant had been charged with a drink-driving offence in the last 5 years, had drink driving in the last month, or ridden as a passenger of a drink driver in the last month. Results indicate that across both the hospital and roadside samples, the AUDIT short and long forms are strongly correlated but that the 24 hour alcohol use measure correlates only weakly and insignificantly with both of these measures. It was found consistently across both samples that the full AUDIT and AUDIT-C measures were able to significantly predict self report drink driving behaviours, although the full AUDIT was able to account for a larger proportion of variance that the short form. The 24 hour alcohol measure was able to predict drink driving in the last month and riding as a passenger of a drink driver in the last month for the roadside sample, but had no predictive ability for the hospital sample. These results are discussed in terms of suggestions for future applicability of these measures and practical considerations for their use in data collection.
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