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. 2022 Jun:129:107278.
doi: 10.1016/j.addbeh.2022.107278. Epub 2022 Feb 11.

Assessing alcohol use in situ: Correlates of self-report vs. objective alcohol consumption

Melissa Cox  1 , Beth Chaney  2 , Leah McDonald  3 , Mary Beth Miller  4
Affiliations

Assessing alcohol use in situ: Correlates of self-report vs. objective alcohol consumption

Melissa Cox et al. Addict Behav. 2022 Jun.

Abstract

Associations between self-report and objective measurement of young adult alcohol use are weakened by excessive consumption levels; therefore, associations between correlates of alcohol use and consumption likely also differ by alcohol measurement. This study examined the extent to which correlates of heavy drinking measured via self-report are also indicators of heavy drinking measured objectively. Data were collected from 164 bar patrons (54% male; 73% White, 12% Black, 15% Other; 15% Hispanic) as they exited the bar. Participants completed an intercept survey including self-reported measures of drinking, demographics, and social-environmental factors. A breath alcohol concentration (BrAC) reading was also obtained using a handheld breathalyzer device. Correlations between two self-reported outcomes, number of drinks consumed prior to and at the bar, and BrAC were significant among those in the lowest quartile of BrAC readings, but largely non-significant at moderate and high BrAC levels. Intention to get drunk that night was a robust predictor of alcohol consumption across self-reported outcomes and BrAC. Social factors (presence of drinking peers, witnessing drunk others) were predictive of self-reported alcohol use but not BrAC. AUDIT-C score was the only additional alcohol behavior predictive of objectively measured alcohol use. Self-reported outcomes and BrAC, as well as their association with key correlates, diverge at high levels of intoxication, when preventive intervention is most needed. Implications for further research and alcohol prevention practice are discussed.

Keywords: Alcohol correlates; Self-report and objective measurement; Social context; Young adult alcohol misuse.

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