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Table 5 Comparison of studies on prevalence and amount of caffeine consumption in military servicesa

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

Measure Study Air Force Army Marine Corps Navy
Prevalence (%)b Previousc 84 82 86 88
Current 86 87 85 89
Daily Consumption (mg/day) Previousc 212 347 232 217
Current 215 252 270 264
  1. aCaffeine consumers only
  2. bCaffeine prevalence is defined as use ≥1 time/week
  3. cPrevious studies include those of the Army [20], Air Force [22], and Navy/Marine Corps [21]