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Table 3 Virulence factors of H. pylori from Vietnam

From: Helicobacter pylori infection and gastroduodenal diseases in Vietnam: a cross-sectional, hospital-based study

  Total
(n = 100)
Peptic ulcer
(n = 24)
Chronic gastritis
(n = 76)
p
cagA     > 0.05
   Positive 95 (95%) 24 (100%) 71 (93.4%)  
   Negative 5 (5%) 0 (0%) 5 (6.6%)  
cagE     > 0.05
   Positive 88 (88%) 24 (100%) 64 (84.2%)  
   Negative 12 (12%) 0 (0%) 12 (15.8%)  
vacA m    < 0.05
   m1 48 (48%) 17 (70.8%) 31 (40.8%)  
   m2 52 (52%) 7 (29.2%) 45 (59.2%)  
vacA s     > 0.05
   s1 100 (100%) 24 (100%) 76 (100%)  
   s2 0 (0%) 0 (0%) 0 (0%)  
vacA i     > 0.05
   i1 94 (94%) 24 (100%) 70 (92.1%)  
   i2 6 (6%) 0 (0%) 6 (7.9%)  
babA     > 0.05
   Positive 92 (92%) 24 (100%) 68 (89.5%)  
   Negative 8 (8%) 0 (0%) 8 (10.5%)  
oipA status     > 0.05
   On 100 (100%) 24 (100%) 76 (100%)  
   Off 0 (0%) 0 (0%) 0 (0%)  
iceA     > 0.05
   iceA1 50 (50%) 13 (54.2%) 37 (48.7%)  
   iceA2 44 (44%) 11 (45.8%) 33 (43.5%)  
   Both iceA1/2 3 (3%) 0 (0%) 3 (3.9%)  
   None 3 (3%) 0 (0%) 3 (3.9%)  
homB     > 0.05
   Positive 39 (39%) 7 (29.2%) 32 (42.1%)  
   Negative 61 (61%) 17 (70.8%) 44 (57.9%)  
Quadruple positivity †     < 0.05
   Yes 45 (45%) 17 (70.8%) 28 (36.8%)  
   No 55 (55%) 7 (29.2%) 48 (63.2%)  
  1. † Prevalence was significantly different between peptic ulcer and chronic gastritis