Table 1.
Characteristics of the visitors and the participants in the polymorphism study
| Characteristics | Visitors (n=210) n (%) | Participants (n=165) n (%) | |
|---|---|---|---|
| Age | < 30 years | 23 (11.0) | 15 (9.1) |
| 31-49 years | 52 (24.8) | 42 (25.5) | |
| 50-69 years | 126 (60.0) | 106 (64.2) | |
| 70 < years | 9 (4.3) | 2 (1.2) | |
| Sex | Males | 91 (43.3) | 74 (55.2) |
| Females | 119 (56.7) | 91 (44.9) | |
| Smokinga | Never | 160 (76.6) | 127 (77.0) |
| Former | 25 (12.0) | 19 (11.5) | |
| Current | 24 (11.5) | 19 (11.5) | |
| H. pylorib | Uninfected | 65 (31.6) | 55 (33.3) |
| Infecteted | 142 (68.6) | 110 (66.8) | |
| CYP2C19 | RM | - | 51 (30.9) |
| IM | - | 81 (49.1) | |
| PM | - | 33 (20.0) | |
| IL-1B C-31Tc | TT | - | 48 (29.3) |
| CT | - | 76 (46.3) | |
| CC | - | 40 (24.4) | |
| TNF-A C-1031T | TT | - | 131 (79.4) |
| CT | - | 29 (17.6) | |
| CC | - | 5 (3.0) |
a The information on the status of smoking was not available for one subject. b Three subjects among visitors did not take the examination on H. pylori infection. c One subject was not genotyped