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Table 1 Demographics of Study Population

From: A cross-sectional analysis of clinical presentations of and risk factors for enteric protozoan Infections in an Active Duty Population during Operation Iraqi Freedom

   Protozoa Found No Protozoa Found Total p value
   n = 75 n = 362 n = 437  
Male, n (%)   74 (98.6) 353 (98.0) 427 0.72
Median Days at Al Asad (IQR)   112 (93-118) 112 (101-120) 113 (101-121) 0.44
Median Days in Theater (IQR)   126 (115-130) 126 (117-130) 127 (120-132) 0.89
Median Age (IQR)   23.0 (21-27) 23.0 (21-27) 23.0 (21-27) 0.95
Age, n (%)      
  <20 4 (5.3) 30 (8.3) 34 (7.8)  
  20-29 57 (76) 258 (71.2) 315 (72.0)  
  30-39 10 (13.3) 56 (15.4) 66 (15.1)  
  40-49 4 (5.3) 16 (4.4) 20 (4.5)  
  >50 0 (0) 2 (0.5) 2 (0.5) 0.81
Rank, n (%)      
  E1-E3 36 (48.0) 159 (44.1) 195 (44.8)  
  E4-E9 36 (48.0) 189 (52.5) 225 (51.7)  
  Officers 2 (2.7) 11 (3.0) 13 (3.0)  
  Civilian 1 (1.3) 1 (0.2) 2 (0.5) 0.58
Race, n (%)      
  African American 3 (4.1) 29 (8.2) 32 (7.5)  
  Caucasian 52 (71.2) 212 (60.5) 264 (62.4)  
  Hispanic 15 (20.5) 76 (21.7) 91 (21.5)  
  Other 3 (4.1) 33 (9.4) 36 (8.5) 0.21
Service, n (%) Marines 67 (89.3) 309 (85.3) 376 (86.0)  
  Navy 8 (10.7) 48 (13.2) 56 (12.8)  
  Army 0 (0) 5 (1.4) 5 (1.1)  
Active Component, n (%)   67 (89.3) 332 (91.7) 399 (91.3) 0.23
Malaria Prophylaxis, n (%)   66 (88.0) 305 (84.9) 317 (85.5) 0.86