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Table 1 Characteristics of the study population

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

  H. pylori-positive H. pylori-negative Total
No. of participants (%) 177 (65.6%) 93 (34.4%) 270
Number (%) in region    
   Hanoi 89 (66.4%) 45 (33.6%) 134
   Ho Chi Minh 88 (64.7%) 48 (35.3%) 136
Sex, no. (%)    
   Female 101 (66%) 52 (34%) 153
   Male 76 (65%) 41 (35%) 117
Age group, no. (%)    
   ≤40 67 (57.8%) 49 (42.2%) 116
≤20 6 (66.7%) 3 (33.3%) 9
21-30 24 (53.3%) 21 (46.7%) 45
31-40 37 (59.7%) 25 (40.3%) 62
   > 40 110 (71.4%) 44 (28.6%) 154
41-50 62 (71.3%) 25 (28.7%) 87
51-60 30 (69.8%) 13 (30.2%) 43
>60 18 (75.0%) 6 (25.0%) 24
Mean age (range) 43.7 (14-83) 40.2 (18-86) 42.5 (14-86)
Disease    
   Peptic ulcer 37 1 38
   Gastric cancer 0 0 0
   MALT lymphoma 0 0 0
   Chronic gastritis 177 68 145
Active 147 11 158
Non-active 30 57 87
Atrophy 151 53 204
Intestinal metaplasia 26 5 31
   GERD 4 5 9
   Normal 0 25 25