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Proportion of children infected with H pylori according to infection of parents
| Parental infection | No (%) of children infected* | 95% CI |
|---|---|---|
| Group 1 (both parents infected) | 116/265 (44) | 37.9 to 50.1 |
| Group 2 (one parent infected) | 75/256 (30) | 24.8 to 36 |
| Father infected | 34/133 (25) | 17.5 to 32.5 |
| Mother infected | 41/123 (33) | 24.5 to 41.5 |
| Group 3 (neither parent infected) | 17/80 (21) | 11.9 to 30.1 |
Significant trend (χ2 test, P<0.001).
