Table 2.
Infection rates of type I and type II Helicobacter pylori in stepwise chronic gastric diseases
| Groups | Total | H. pylori (+) | H. pylori (-) | Type I H. pylori (+) | Type II H. pylori (+) |
| NAG | 213 | 140 (65.7) | 73 (34.3) | 95 (67.9)a | 45 (32.1) |
| NAGE | 96 | 75 (78.1)c | 21 (21.9) | 47 (62.7)a | 28 (37.3) |
| PU | 94 | 85 (90.4)c | 9 (9.6) | 66 (77.6)ae | 19 (22.4) |
| CAG | 77 | 64 (83.1)c | 13 (16.9) | 51 (79.7)ae | 13 (20.3) |
| GC | 43 | 38 (88.4)c | 5 (11.6) | 32 (84.2)ae | 6 (15.8) |
| Total | 523 | 402 (76.9) | 121 (23.1) | 291 (72.4) | 111 (27.6) |
Data are presented as n (%).
a
P < 0.05, when type I H. pylori infection rate was compared with type II H. pylori infection rate in the same disease groups;
c
P < 0.05, when H. pylori infection rate was compared with the rate of control [non-atrophic gastritis (NAG)] group;
e
P < 0.05, when type I H. pylori infection rate was compared with the rate of NAG group. CAG: Chronic atrophic gastritis; GC: Gastric cancer; H. pylori : Helicobacter pylori; NAG: Non-atrophic gastritis; NAGE: Non-atrophic gastritis with erosion; PU: Peptic ulcer.