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Comparison of the Helicobacter pylori positive rates between cases and controls, n (%)
| Type | Cases | Controls | χ2 | P value |
| Total | 120 (66.67) | 98 (54.44) | 5.63 | 0.02 |
| Gender | ||||
| Male | 94 (52.22) | 77 (42.78) | 4.88 | 0.03 |
| Female | 26 (14.44) | 21 (11.67) | 0.97 | 0.33 |
| χ2 | 2.65 | 1.20 | ||
| P value | 0.10 | 0.27 | ||
| Age (years) | ||||
| <50 | 20 (11.11) | 16 (8.89) | 0.86 | 0.36 |
| 50–65 | 51 (28.33) | 42 (23.33) | 3.16 | 0.08 |
| ≥65 | 49 (27.22) | 40 (22.22) | 1.57 | 0.21 |
| χ2 | 0.55 | 1.28 | ||
| P value | 0.76 | 0.53 | ||
