Factors Associated with Self-Estimated Breath Alcohol Concentration Among Bar Patrons

Matthew E. Rossheim, Adam E. Barry, Dennis L. Thombs, Robert M. Weiler, Jenna R. Krall, Caroline J. Stephenson, Scott T. Walters, Mark B. Reed, John D. Clapp, Sumihiro Suzuki, Tracey Elaine Barnett, M. Brad Cannell

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Background: Few studies have examined the context in which drinkers underestimate their breath alcohol concentration (BrAC) in natural drinking environments. This study examined factors associated with bar patrons’ self-estimated BrAC in high-risk college town settings. Methods: Guided interview and BrAC data were collected from 510 participants recruited as they exited bars located close to large universities: 1 in Florida and 1 in Texas. Results: Participants with the highest measured BrACs underestimated their BrAC levels the most. Findings from multivariable linear regression analysis indicated that BrAC (std β = 0.014, p < 0.001), number of alcoholic drinks consumed (std β = 0.006, p < 0.01), and perceived drunkenness (std β = 0.024, p < 0.001) had significant positive associations with BrAC self-estimates, where the regression coefficients were scaled by values approximately equal to each variable's interquartile range. Among the 321 participants with BrAC levels ≥ 0.08 g/dl, 21.2% believed their BrAC was below the legal per se driving limit of 0.08 g/dl. Results from a logistic regression analysis indicated that higher levels of perceived drunkenness were associated with better self-recognition that one's BrAC level exceeded the legal driving threshold (OR = 3.312, p < 0.001). Further, participants under 26 years of age had reduced odds of recognizing that their BrAC was greater than 0.079 g/dl (OR = 0.245, p < 0.05). Conclusions: These findings highlight the inaccuracy of self-estimated BrAC when drinking, particularly among younger drinkers. Adjusting for BrAC, situational factors were strongly associated with self-estimated BrAC. Future research is needed to better understand how altering drinking environments may improve accuracy of BrAC self-estimates and deter driving after drinking.

Original languageEnglish
Pages (from-to)1492-1501
Number of pages10
JournalAlcoholism: Clinical and Experimental Research
Volume41
Issue number8
DOIs
StatePublished - 1 Aug 2017

Fingerprint

Alcohols
Drinking
Alcoholic Intoxication
Regression analysis
Regression Analysis
Linear regression
Logistics
Linear Models
Logistic Models
Interviews

Keywords

  • Errors in Self-Estimation of Breath Alcohol Concentration
  • Inaccuracy of Perceived Blood Alcohol Concentration Levels
  • Misperceptions of BAC Self-Estimates

Cite this

Rossheim, M. E., Barry, A. E., Thombs, D. L., Weiler, R. M., Krall, J. R., Stephenson, C. J., ... Cannell, M. B. (2017). Factors Associated with Self-Estimated Breath Alcohol Concentration Among Bar Patrons. Alcoholism: Clinical and Experimental Research, 41(8), 1492-1501. https://doi.org/10.1111/acer.13428
Rossheim, Matthew E. ; Barry, Adam E. ; Thombs, Dennis L. ; Weiler, Robert M. ; Krall, Jenna R. ; Stephenson, Caroline J. ; Walters, Scott T. ; Reed, Mark B. ; Clapp, John D. ; Suzuki, Sumihiro ; Barnett, Tracey Elaine ; Cannell, M. Brad. / Factors Associated with Self-Estimated Breath Alcohol Concentration Among Bar Patrons. In: Alcoholism: Clinical and Experimental Research. 2017 ; Vol. 41, No. 8. pp. 1492-1501.
@article{4883860e3d7c4feeaab0fc30ca3aa005,
title = "Factors Associated with Self-Estimated Breath Alcohol Concentration Among Bar Patrons",
abstract = "Background: Few studies have examined the context in which drinkers underestimate their breath alcohol concentration (BrAC) in natural drinking environments. This study examined factors associated with bar patrons’ self-estimated BrAC in high-risk college town settings. Methods: Guided interview and BrAC data were collected from 510 participants recruited as they exited bars located close to large universities: 1 in Florida and 1 in Texas. Results: Participants with the highest measured BrACs underestimated their BrAC levels the most. Findings from multivariable linear regression analysis indicated that BrAC (std β = 0.014, p < 0.001), number of alcoholic drinks consumed (std β = 0.006, p < 0.01), and perceived drunkenness (std β = 0.024, p < 0.001) had significant positive associations with BrAC self-estimates, where the regression coefficients were scaled by values approximately equal to each variable's interquartile range. Among the 321 participants with BrAC levels ≥ 0.08 g/dl, 21.2{\%} believed their BrAC was below the legal per se driving limit of 0.08 g/dl. Results from a logistic regression analysis indicated that higher levels of perceived drunkenness were associated with better self-recognition that one's BrAC level exceeded the legal driving threshold (OR = 3.312, p < 0.001). Further, participants under 26 years of age had reduced odds of recognizing that their BrAC was greater than 0.079 g/dl (OR = 0.245, p < 0.05). Conclusions: These findings highlight the inaccuracy of self-estimated BrAC when drinking, particularly among younger drinkers. Adjusting for BrAC, situational factors were strongly associated with self-estimated BrAC. Future research is needed to better understand how altering drinking environments may improve accuracy of BrAC self-estimates and deter driving after drinking.",
keywords = "Errors in Self-Estimation of Breath Alcohol Concentration, Inaccuracy of Perceived Blood Alcohol Concentration Levels, Misperceptions of BAC Self-Estimates",
author = "Rossheim, {Matthew E.} and Barry, {Adam E.} and Thombs, {Dennis L.} and Weiler, {Robert M.} and Krall, {Jenna R.} and Stephenson, {Caroline J.} and Walters, {Scott T.} and Reed, {Mark B.} and Clapp, {John D.} and Sumihiro Suzuki and Barnett, {Tracey Elaine} and Cannell, {M. Brad}",
year = "2017",
month = "8",
day = "1",
doi = "10.1111/acer.13428",
language = "English",
volume = "41",
pages = "1492--1501",
journal = "Alcoholism: Clinical and Experimental Research",
issn = "0145-6008",
publisher = "Wiley-Blackwell",
number = "8",

}

Factors Associated with Self-Estimated Breath Alcohol Concentration Among Bar Patrons. / Rossheim, Matthew E.; Barry, Adam E.; Thombs, Dennis L.; Weiler, Robert M.; Krall, Jenna R.; Stephenson, Caroline J.; Walters, Scott T.; Reed, Mark B.; Clapp, John D.; Suzuki, Sumihiro; Barnett, Tracey Elaine; Cannell, M. Brad.

In: Alcoholism: Clinical and Experimental Research, Vol. 41, No. 8, 01.08.2017, p. 1492-1501.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Factors Associated with Self-Estimated Breath Alcohol Concentration Among Bar Patrons

AU - Rossheim, Matthew E.

AU - Barry, Adam E.

AU - Thombs, Dennis L.

AU - Weiler, Robert M.

AU - Krall, Jenna R.

AU - Stephenson, Caroline J.

AU - Walters, Scott T.

AU - Reed, Mark B.

AU - Clapp, John D.

AU - Suzuki, Sumihiro

AU - Barnett, Tracey Elaine

AU - Cannell, M. Brad

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Background: Few studies have examined the context in which drinkers underestimate their breath alcohol concentration (BrAC) in natural drinking environments. This study examined factors associated with bar patrons’ self-estimated BrAC in high-risk college town settings. Methods: Guided interview and BrAC data were collected from 510 participants recruited as they exited bars located close to large universities: 1 in Florida and 1 in Texas. Results: Participants with the highest measured BrACs underestimated their BrAC levels the most. Findings from multivariable linear regression analysis indicated that BrAC (std β = 0.014, p < 0.001), number of alcoholic drinks consumed (std β = 0.006, p < 0.01), and perceived drunkenness (std β = 0.024, p < 0.001) had significant positive associations with BrAC self-estimates, where the regression coefficients were scaled by values approximately equal to each variable's interquartile range. Among the 321 participants with BrAC levels ≥ 0.08 g/dl, 21.2% believed their BrAC was below the legal per se driving limit of 0.08 g/dl. Results from a logistic regression analysis indicated that higher levels of perceived drunkenness were associated with better self-recognition that one's BrAC level exceeded the legal driving threshold (OR = 3.312, p < 0.001). Further, participants under 26 years of age had reduced odds of recognizing that their BrAC was greater than 0.079 g/dl (OR = 0.245, p < 0.05). Conclusions: These findings highlight the inaccuracy of self-estimated BrAC when drinking, particularly among younger drinkers. Adjusting for BrAC, situational factors were strongly associated with self-estimated BrAC. Future research is needed to better understand how altering drinking environments may improve accuracy of BrAC self-estimates and deter driving after drinking.

AB - Background: Few studies have examined the context in which drinkers underestimate their breath alcohol concentration (BrAC) in natural drinking environments. This study examined factors associated with bar patrons’ self-estimated BrAC in high-risk college town settings. Methods: Guided interview and BrAC data were collected from 510 participants recruited as they exited bars located close to large universities: 1 in Florida and 1 in Texas. Results: Participants with the highest measured BrACs underestimated their BrAC levels the most. Findings from multivariable linear regression analysis indicated that BrAC (std β = 0.014, p < 0.001), number of alcoholic drinks consumed (std β = 0.006, p < 0.01), and perceived drunkenness (std β = 0.024, p < 0.001) had significant positive associations with BrAC self-estimates, where the regression coefficients were scaled by values approximately equal to each variable's interquartile range. Among the 321 participants with BrAC levels ≥ 0.08 g/dl, 21.2% believed their BrAC was below the legal per se driving limit of 0.08 g/dl. Results from a logistic regression analysis indicated that higher levels of perceived drunkenness were associated with better self-recognition that one's BrAC level exceeded the legal driving threshold (OR = 3.312, p < 0.001). Further, participants under 26 years of age had reduced odds of recognizing that their BrAC was greater than 0.079 g/dl (OR = 0.245, p < 0.05). Conclusions: These findings highlight the inaccuracy of self-estimated BrAC when drinking, particularly among younger drinkers. Adjusting for BrAC, situational factors were strongly associated with self-estimated BrAC. Future research is needed to better understand how altering drinking environments may improve accuracy of BrAC self-estimates and deter driving after drinking.

KW - Errors in Self-Estimation of Breath Alcohol Concentration

KW - Inaccuracy of Perceived Blood Alcohol Concentration Levels

KW - Misperceptions of BAC Self-Estimates

UR - http://www.scopus.com/inward/record.url?scp=85021809071&partnerID=8YFLogxK

U2 - 10.1111/acer.13428

DO - 10.1111/acer.13428

M3 - Article

C2 - 28683518

AN - SCOPUS:85021809071

VL - 41

SP - 1492

EP - 1501

JO - Alcoholism: Clinical and Experimental Research

JF - Alcoholism: Clinical and Experimental Research

SN - 0145-6008

IS - 8

ER -