Prevalence of caffeine consumers, daily caffeine consumption, and factors associated with caffeine use among active duty United States military personnel

Table 5 Comparison of studies on prevalence and amount of caffeine consumption in military services^a

Measure	Study	Air Force	Army	Marine Corps	Navy
Prevalence (%)^b	Previous^c	84	82	86	88
Prevalence (%)^b	Current	86	87	85	89
Daily Consumption (mg/day)	Previous^c	212	347	232	217
Daily Consumption (mg/day)	Current	215	252	270	264

^aCaffeine consumers only
^bCaffeine prevalence is defined as use ≥1 time/week
^cPrevious studies include those of the Army [20], Air Force [22], and Navy/Marine Corps [21]

ISSN: 1475-2891