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. 2001 Feb;39(2):606–612. doi: 10.1128/JCM.39.2.606-612.2001

TABLE 2.

Association between cagA status of H. pylori isolates and duodenal ulcer, gastric ulcer, and nonulcer patients

Clinical status n No. with H. pylori cagAa RRc 95% CI P valueb
Nonulcer 23 12 (52)
Gastric ulcer 28 20 (72) 1.48 0.82–2.68 0.26
Duodenal ulcer 24 21 (87) 2.97 1.05–8.37 0.02
a

cagA was analyzed by PCR using the consensus region primers. 

b

χ2 for trend = 6.77; P = 0.009. 

c

RR, relative risk.