TABLE 1.
Univariate analysis of the relationship between H. pylori typing and duodenal ulcer prevalence in four countriesa
| Location(s) | Disease (no. of cases) | No. of cases (% of total cases)
|
|||
|---|---|---|---|---|---|
| BabA | cag PAI | vacA s1 | vacA m1 | ||
| East Asian countries | |||||
| Japan and Korea | Duodenal ulcer (295) | 283 (96) | 288 (98) | 295 (100) | 282 (96) |
| Gastritis (179) | 159 (89) | 176 (98) | 179 (100) | 174 (97) | |
| P value | 0.003 | NS | NS | NS | |
| Japan | Duodenal ulcer (180) | 172 (96) | 177 (98) | 180 (100) | 178 (99) |
| Gastritis (126) | 112 (89) | 124 (98) | 126 (100) | 124 (98) | |
| P value | 0.024 | NS | NS | NS | |
| Korea | Duodenal ulcer (115) | 111 (97) | 111 (97) | 115 (100) | 104 (90) |
| Gastritis (53) | 47 (89) | 52 (98) | 53 (100) | 50 (94) | |
| P value | 0.054 | NS | NS | NS | |
| Western countries | |||||
| United States and Columbia | Duodenal ulcer (209) | 176 (84) | 196 (94) | 187 (89) | 137 (66) |
| Gastritis (144) | 103 (72) | 124 (86) | 114 (79) | 100 (69) | |
| P value | 0.003 | 0.013 | 0.006 | NS | |
| United States | Duodenal ulcer (145) | 123 (85) | 138 (95) | 136 (94) | 98 (68) |
| Gastritis (92) | 66 (72) | 77 (84) | 73 (79) | 64 (70) | |
| P value | 0.012 | 0.003 | 0.001 | NS | |
| Colombia | Duodenal ulcer (64) | 53 (83) | 58 (91) | 51 (80) | 39 (61) |
| Gastritis (52) | 37 (71) | 47 (90) | 41 (79) | 36 (69) | |
| P value | 0.102 | NS | NS | NS | |
a
P values were determined by Fisher's exact test. *, significantly different (P < 0.05); NS, not significant (P > 0.1).