Table 3.

Detection of H. pylori infection by histology and serology and of the IgG response to CagA, according to the age and gastroduodenal disease of the patients

Age (y)Diagnosis
Non–atrophic gastritis+ (%)*Intestinal metaplasia+ (%)*Gastric cancer+ (%)*Duodenal ulcer+ (%)*
H. pylori histology
    30-44131 (76.6)14 (73.7)8 (88.9)15 (88.2)
    45-5471 (72.5)21 (91.3)8 (72.7)17 (89.5)
    55-6439 (69.6)25 (83.3)9 (60.0)11 (84.6)
    ≥6529 (67.4)31 (81.6)18 (60.0)9 (90.0)
H. pylori serology
    30-44114 (67.9)10 (52.6)7 (77.8)14 (82.4)
    45-5461 (62.9)18 (78.3)4 (36.4)13 (68.4)
    55-6430 (56.6)22 (73.3)6 (42.9)12 (92.3)
    ≥6522 (52.4)26 (68.4)9 (31.0)9 (90.0)
CagA serology
    30-44110 (64.3)15 (79.0)8 (88.9)14 (82.4)
    45-5465 (66.3)19 (82.6)8 (72.7)13 (68.4)
    55-6434 (60.7)23 (76.7)12 (80.0)10 (76.9)
    ≥6527 (62.8)31 (81.6)15 (50.0)6 (60.0)
  • * Patients might have more than one pathologic diagnosis, but only the most severe was considered.