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. 2021 Feb 8;31(3):368–379. doi: 10.4014/jmb.2101.01023

Table 3.

Vacuolating toxin activity of H. pylori isolates recovered from patients with chronic gastritis, peptic ulcer, or gastric cancer.

Symptoms No Vacuolating toxin activity

Extremely Strong (>41) Strong (41~21.8) Moderate (21.8~2.6) Weak (<2.6)
Chronic gastritis 38 5 (13%) 8 (21%) 20 (53%) 5 (13%)
Peptic ulcer 39 4 (10%) 7 (18%) 19 (49%) 9 (23%)
Gastric cancer 39 13 (33%)a 6 (15%) 17 (44%) 3 (8%)
Total 116 22 (19%) 21 (18%) 56 (48%) 17 (15%)

Parentheses indicate percentage of each group classified by vacuolating cytotoxin activity.

ap = 0.026 compared with groups of chronic gastritis or peptic ulcer using Fisher’s exact test.