The percentage of U.S. Air Force personnel who report "using caffeinated beverages" one or more times a week, according to a forthcoming article in the journal Food and Chemical Toxicology -- Caffeine consumption among active duty United States Air Force personnel.
The most commonly consumed caffeinated beverages (% users) were sodas (56%), coffee (45%), teas (36%), and energy drinks (27%).
According to the researchers:
Characteristics independently associated with caffeine use among Air Force personnel included older age, ethnicity other than black, tobacco use, less aerobic exercise, and less sleep.
The article points out that National Health and Nutrition Examination Survey data "indicated that 89% of Americans regularly consumed caffeinated products, but these data did not include military personnel."