Table 1

Expression of the cagA gene and endoscopy findings

Endoscopy findings		H pylori positive		H pylori negative		H pylori positive/total	cagA⁺/(cagA⁺+ cagA⁻)
Endoscopy findings		cagA⁺	cagA⁻	H pylori negative		H pylori positive/total	cagA⁺/(cagA⁺+ cagA⁻)	Not tested^*
Chronic gastritis (n=66)	46	7	2	11	83.3%	86.8%
Gastric ulcer (n=58)	45	6	3	4	93.1%	88.2%
Duodenal ulcer (n=33)	29	0	2	2	93.9%	100%
Normal mucosa (n=27)	0	0	0	27	0.0%	–
Total (n=184)	120	13	7	44	76.1%	90.2%