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Table 1 Clinical Characteristics – Parasitic and Bacterial Diagnosis

From: Predictors of aetiology and outcomes of acute gastrointestinal illness in returning travellers: a retrospective cohort analysis

  Any Parasitic Diagnosis (N = 137) p value Any Bacterial Diagnosis (N = 111) p value Total (N = 1450)
Gender   0.802   *0.006  
 Female 76 (55.5%)   49 (44.1%)   819 (56.5%)
 Male 61 (44.5%)   62 (55.9%)   631 (43.5%)
Age   0.276   *0.018  
 Mean (SD) 37.065 (12.685)   33.302 (11.987)   35.971 (12.353)
 Range 16.720 - 73.200   16.930 - 73.200   15.240 - 84.540
HIV Positive 0 (0.0%) 0.901 0 (0.0%) 0.811 2 (0.1%)
Travel History
 Central Asia 6 (4.4%) 0.176 2 (1.8%) 0.574 38 (2.6%)
 Europe 3 (2.2%) 0.337 2 (1.8%) 0.279 53 (3.7%)
 North Africa 11 (8.0%) 0.151 14 (12.6%) 0.781 171 (11.8%)
 Pacific Islands 0 (0.0%) 0.518 1 (0.9%) 0.191 4 (0.3%)
 Southern Africa 5 (3.6%) 0.165 2 (1.8%) *0.039 93 (6.4%)
 Caribbean 1 (0.7%) 0.038 4 (3.6%) 0.796 59 (4.1%)
 South America 14 (10.2%) 0.484 8 (7.2%) 0.581 125 (8.6%)
 Australia and New Zealand 2 (1.5%) 0.901 2 (1.8%) 0.85 23 (1.6%)
 Bahamas 0 (0.0%) 0.575 0 (0.0%) 0.618 3 (0.2%)
 Middle East 1 (0.7%) 0.12 1 (0.9%) 0.203 41 (2.8%)
 South Asia 54 (39.4%) < 0.001 14 (12.6%) *0.013 319 (22.0%)
 Central America 8 (5.8%) 0.676 6 (5.4%) 0.573 97 (6.7%)
 West Africa 13 (9.5%) 0.527 7 (6.3%) 0.094 161 (11.1%)
 South East Asia 24 (17.5%) 0.433 31 (27.9%) *0.031 291 (20.1%)
 East Africa 21 (15.3%) 0.404 26 (23.4%) 0.116 260 (17.9%)
 North America and Canada 1 (0.7%) 0.264 3 (2.7%) 0.582 29 (2.0%)
 Central Africa 3 (2.2%) 0.766 1 (0.9%) 0.436 27 (1.9%)
 China 1 (0.7%) 0.145 2 (1.8%) 0.574 38 (2.6%)
 Oceania 0 (0.0%) 0.428 1 (0.9%) 0.405 6 (0.4%)
Syndrome   *0.008   < 0.001  
 Non-dysenteric diarrhoea 117 (85.4%)   81 (73.0%)   1081 (74.6%)
 Abdominal pain 13 (9.5%)   3 (2.7%)   176 (12.1%)
 Dysenteric diarrhoea 4 (2.9%)   25 (22.5%)   153 (10.6%)
 Other 3 (2.2%)   2 (1.8%)   40 (2.8%)
Stool Microscopy      
 White cells 13 (9.5%) 0.751 36 (32.4%) < 0.001 127 (8.8%)
 Red cells 8 (5.8%) 0.342 18 (16.2%) < 0.001 62 (4.3%)
Peripheral WBC Count   0.066   0.334  
 Decreased 1 (0.7%)   0 (0.0%)   14 (1.0%)
 Increased 23 (16.8%)   15 (13.5%)   159 (11.0%)
 Normal 110 (80.3%)   88 (79.3%)   1206 (83.2%)
C-reactive Protein   0.151   < 0.001  
 Increased 44 (32.1%)   77 (69.4%)   500 (34.5%)
 Normal 90 (65.7%)   26 (23.4%)   873 (60.2%)
ALT   0.134   0.588  
 Increased 25 (18.2%)   14 (12.6%)   197 (13.6%)
 Normal 108 (78.8%)   89 (80.2%)   1178 (81.2%)
  1. Significance indicated by p value marked in bold with * where ≤0.001 < p < 0.05