Table 1.
Demographic data of cases and controls n (%)
| Characteristic | Cases | Controls | t/χ2 | P value | |
| n = 171 | n = 367 | ||||
| Age (yr, mean ± SD) | 56.93 ± 14.01 | 56.81 ± 13.90 | 0.0931 | 0.440 | |
| Gender | |||||
| Male | 118 (69.01) | 243 (66.21) | 0.412 | 0.521 | |
| Female | 53 (30.99) | 124 (33.79) | |||
| Education | |||||
| Primary | 51 (29.82) | 117 (31.88) | 0.332 | 0.847 | |
| Secondary | 84 (49.12) | 179 (48.77) | |||
| Tertiary and postgraduate | 36 (21.06) | 71 (19.35) | |||
| BMI (kg/m2) | |||||
| ≤ 25 | 110 (64.33) | 244 (66.49) | 0.365 | 0.794 | |
| > 25 | 61 (35.67) | 123 (33.51) | |||
| H. pylori CagA positive | 101 (59.06) | 163 (44.41) | 10.018 | 0.002a | |
| IL-1B-31 | |||||
| TT | 41 (23.98) | 89 (24.25) | 0.005 | 0.997 | |
| TC | 84 (49.12) | 180 (49.05) | |||
| CC | 46 (26.90) | 98 (26.70) | |||
| C carrier | 130 (76.02) | 278 (75.75) | |||
| Pork consumption | |||||
| < 25 g/d | 89 (52.05) | 177 (48.23) | 0.680 | 0.410 | |
| ≥ 25 g/d | 82 (47.95) | 190 (51.77) | |||
1
For t test.
a
P < 0.05 vs control group. BMI: Body mass index; H. pylori: Helicobacter pylori; IL: Interleukin.