Table 2

Analysis of mean nucleotide diversity of synonymous sitesa

cagA group classificationMean nucleotide diversity (πs)
Domain 1Domain 2Domain 3Whole gene
10.087230.087650.104010.08617
20.093750.03437b0.09430.08283
30.06232c0.079350.091930.06559d
1, 2, and 30.159560.183760.154120.15902
  • a For this analysis, group 1 contained 49 sequences, group 2 contained 55 sequences, and group 3 contained 21 sequences.

  • b P < 0.001 compared to group 1; P < 0.01 compared to group 3.

  • c P < 0.001 compared to group 1 and group 2.

  • d P < 0.001 compared to group 1; P < 0.01 compared to group 2.