Table 4

Association between Helicobacter pylori infection and cardia gastric cancer4-150 by interval between sample collection for H pylori serology and cancer diagnosis, age at diagnosis, sex, and tumour histology4-152

  • 4-150 Excludes all cases known to have had a partial gastrectomy and cases where the cancer could not be localised to a particular part of the stomach.

  • 4-151 Percentages are not directly comparable across strata because different studies contributed different numbers of cases to each stratum.

  • 4-152 Information about histological type was only available for seven studies (the two from the USA, the two from Finland, Taiwan, Japan and Norway).

  • OR, odds ratio; CI, confidence interval.