Event-level analyses of energy drink consumption and alcohol intoxication in bar patrons

Addict Behav. 2010 Apr;35(4):325-30. doi: 10.1016/j.addbeh.2009.11.004. Epub 2009 Nov 24.


Aim: To assess event-level associations between energy drink consumption, alcohol intoxication, and intention to drive a motor vehicle in patrons exiting bars at night.

Method: Alcohol field study. Data collected in a U.S. college bar district from 802 randomly selected and self-selected patrons. Anonymous interview and survey data were obtained as well as breath alcohol concentration (BrAC) readings.

Results: Results from logistic regression models revealed that patrons who had consumed alcohol mixed with energy drinks were at a 3-fold increased risk of leaving a bar highly intoxicated (BrAC> or =0.08g/210L), as well as a 4-fold increased risk of intending to drive upon leaving the bar district, compared to other drinking patrons who did not consume alcoholic beverages mixed with energy drinks.

Discussion: These event-level associations provide additional evidence that energy drink consumption by young adults at bars is a marker for elevated involvement in nighttime risk-taking behavior. Further field research is needed to develop sound regulatory policy on alcohol/energy drink sales practices of on-premise establishments.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alcohol Drinking / epidemiology*
  • Alcoholic Intoxication / epidemiology*
  • Automobile Driving / psychology
  • Automobile Driving / statistics & numerical data*
  • Beverages / statistics & numerical data*
  • Caffeine / administration & dosage*
  • Caffeine / adverse effects
  • Central Nervous System Stimulants / administration & dosage*
  • Central Nervous System Stimulants / adverse effects
  • Female
  • Florida / epidemiology
  • Humans
  • Intention
  • Logistic Models
  • Male
  • Risk-Taking
  • Young Adult


  • Central Nervous System Stimulants
  • Caffeine