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Table 2 Comparison of dupA prevalence between ethnic groups and countries.

From: The prevalence of the duodenal ulcer promoting gene (dupA) in Helicobacter pylori isolates varies by ethnic group and is not universally associated with disease development: a case-control study

  Ethnicity/Country Australian Chinese     Indian Malay Swedish   
  Diagnosis FD FD DU GC FD FD FD DU GC  
Ethnicity Diagnosis Prevalence (%) 37.4 28.9 62.5 54.6 7.1 37.7 65.0 63.6 61.9
Australian FD (n = 45) 37.4 P = 1.000 P = 0.237    P < 0.001 P = 1.000 P = 0.060   
Chinese FD (n = 52) 28.9 P = 0.237 P = 1.000 P = 0.015 P = 0.032 P = 0.025 P = 0.052 P = 0.005   
  DU (n = 16) 62.5   P = 0.015 P = 1.000 P = 0.744     P = 1.000  
  GC (n = 22) 54.6   P = 0.032 P = 0.744 P = 1.000      P = 0.760
Indian FD (n = 42) 7.1 P < 0.001 P = 0.025    P = 1.000 P = 0.018 P < 0.001   
Malay FD (n = 14) 37.7 P = 1.000 P = 0.052    P = 0.018 P = 1.000 P = 0.163   
Swedish FD (n = 20) 65.0 P = 0.060 P = 0.005    P < 0.001 P = 0.163 P = 1.000 P = 1.000 P = 1.000
  DU (n = 11) 63.6    P = 1.000     P = 1.000 P = 1.000 P = 1.000
  GC (n = 21) 61.9     P = 0.760    P = 1.000 P = 1.000 P = 1.000
  1. Comparison of the prevalence of dupA-positive clinical isolates as determined by PCR between FD (functional dyspepsia), DU (duodenal ulcer) and GC (gastric cancer) patients from Australia, Sweden and the 3 primary ethnic groups of Malaysia and Singapore (Chinese, Indian and Malay). The statistical significance (P-values) of each valid comparison is displayed.