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Table 1 Demography and diseases according to geography

From: The prevalence of Helicobacter pylori infection and other risk factors among Mongolian dyspeptic patients who have a high incidence and mortality rate of gastric cancer

Parameters Geographical location
Eastern Southern Central Northern Western p value
(Khentii) (Umnugovi) Ulaanbaatar city (Khuvsgul) (Uvs)
Number of cases  n = 115 n = 124 n = 206 n = 171 n = 120  
Mean age with SD 47.4 ± 12.6 44.3 ± 13.8 41.5 ± 15.4 43.5 ± 12.7 42.6 ± 11.9 NS
Age range 17–87 15–79 17–79 19–75 16–74 NS
Gender
 Female 73% 71% 65.5% 65.5% 69.2% NS
 Male 27% 29% 34.5% 34.5% 30.8% NS
Ethnicity
 Major 97.8% 100% N/Aa 98.4% 33.3% 0.0001
 Minor 2.2% 0% 1.6% 66.7%
Endoscopy diagnosis
 Gastric ulcer 3.5% 3% 2.4% 2.9% 2.5% NS
 Duodenal ulcer 0% 0.8% 1.9% 1.8% 1.7% NS
 Erosive GERD 5.2% 9.7% 5.3% 11.7% 14.2% 0.03
 Open type atrophy 1.3% 1.8% 1.4% 6.0% 13% 0.0001
Histology diagnosis
 Intestinal metaplasia 19.1% 21.8% 16% 23.4% 32.5% 0.01
  1. a We could not obtain data