TABLE 1.

Clinical characteristics of subjects tested in this study

H. pylori infection	No. of persons	Men/women	Mean age (yrs) ± SE	% with history of:			% with atrophic gastritis
				Peptic ulcer	Gastric ulcer	Duodenal ulcer
Positive	77	44/33	58.9 ± 1.0	29.9	16.9	13	71.4
Negative	63	26/37	59.3 ± 1.3a	3.2b	1.6	1.6	44.4c

^aNo significant difference by Student's t test. 

^bP < 0.01 by Student's t test. 

^cP < 0.01 by Fisher's exact test.