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Table 2 Incidence of HA and CA- Clostridium difficile infection over the study period among U.S. military personnel (1998-2010)

From: Epidemiology of CLOSTRIDIUM DIFFICILEinfection among active duty United States military personnel (1998-2010)

  CA-CDAD HA-CDAD
  Category Rate (Cases per 100 K p-yr) 95% CI Rate (Cases per 1 K hospitalizations) 95% CI
Overall incidence 5.5 5.2-5.9 1.3 1.2-1.4
Branch of service     
Army 6.3 5.7-6.9 1.2 1.1-1.3
Navy 4.0 3.5-4.7 1.2 1.1-1.4
Air Force 7.2 6.4-8.0 2.7 2.5-2.9
Marines 2.7 2.1-3.5 2.2 1.9-2.5
Coast Guard 8.7 6.4-11.7 Not available  
Age     
<20 1.8 1.3-2.7 0.5 0.4-0.7
20-24 3.8 3.3-4.3 1.1 1.0-1.3
25-29 5.6 4.9-6.4 1.4 1.2-1.6
30-34 6.1 5.3-7.1 1.7 1.5-2.0
35-39 6.4 5.5-7.5 1.7 1.5-1.9
> = 40 12.0 10.6-13.7 1.4 1.3-1.6
Race     
Black 4.6 3.9-5.3 0.9 0.7-1.0
White 6.0 5.5-6.4 1.3 1.2-1.4
Native American 6.0 3.5-10.2 Not available -
Hispanic 2.3 1.7-3.2 Not available -
Asian 2.1 1.3-3.5 Not available -
Other/unk 8.0 6.2-10 0.8 0.7-1.0
Gender     
Male 4.6 4.3-5.0 1.7 1.6-1.8
Female 10.4 9.2-11.7 0.6 0.5-0.7