↵2-150 Excludes all cases known to have had a partial gastrectomy or where the cancer could not be localised to a particular part of the stomach.

2-151 Unpublished data.

2-152 In the Hawaiian study there were no case control pairs with aH pylori positive case and a negative control; in the Japanese study there were no H pylori negative cases.

2-153 Weighted by the number of cases in each study to allow for the different matching ratios of controls to cases.

OR, odds ratio; CI, confidence interval.