TABLE 3.
Association between cagA subtypes of H. pylori isolates and duodenal ulcer, gastric ulcer, and nonulcer patients
| Clinical statusa (n) | No. (%) with cagA subtypebc
|
||||||
|---|---|---|---|---|---|---|---|
| Single subtype
|
Multiple subtypes
|
||||||
| A | B/D | C | A + B/D + C | A + B/D | B/D + C | A + C | |
| NU (10) | 7 (70) | 2 (20) | 1 (10) | ||||
| GU (16) | 8 (50) | 1 (6) | 1 (6) | 3 (19) | 2 (13) | 1 (6) | |
| DU (17) | 13 (76) | 2 (12) | 1 (6) | 1 (6) | |||
a
Abbreviations: NU, nonulcer; GU, gastric ulcer; DU, duodenal ulcer.
b
cagA was analyzed by PCR with variable region primers.
c
χ2 for isolated versus multiple subtypes, P = 0.048.