Table 1.
Prevalence of H. pylori infection by study center, gender, and age
| Characteristics | Number of individuals | % H. pylori positive | p value χ2 | Prevalence by study center
|
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Tapachula, México | Obregón, México | Copán, Honduras | Guanacaste, Costa Rica | León, Nicaragua | Santiago, Chile | Túqueres, Colombia | ||||
| Overall | 1,852 | 79.4 | ||||||||
| Study Center | <0.001 | |||||||||
| Tapachula, México | 301 | 70.1 | ||||||||
| Obregón, México | 249 | 84.7 | ||||||||
| Copán, Honduras | 259 | 82.6 | ||||||||
| Guanacaste, Costa | 272 | 77.6 | ||||||||
| Rica | ||||||||||
| León, Nicaragua | 240 | 83.3 | ||||||||
| Santiago, Chile | 276 | 76.8 | ||||||||
| Túqueres, Colombia | 255 | 83.1 | ||||||||
| Gender | 0.195 | |||||||||
| Female | 1,108 | 78.4 | 69.2 | 86.6 | 81.8 | 73.6 | 79.6 | 77.4 | 81.3 | |
| Male | 744 | 80.9 | 72.0 | 76.6 | 84.6 | 83.2 | 85.7 | 76.2 | 85.3 | |
| p value χ2 | 0.611 | 0.085 | 0.579 | 0.061 | 0.213 | 0.81 | 0.39 | |||
| Age, years | 0.076 | |||||||||
| 20–29 | 328 | 75.6 | 60.3 | 90.6 | 83.6 | 73.2 | 78.1 | 64.0 | 88.9 | |
| 30–39 | 506 | 82.8 | 79.6 | 82.7 | 88.2 | 79.0 | 81.0 | 86.7 | 83.3 | |
| 40–49 | 483 | 78.3 | 70.4 | 88.1 | 75.4 | 73.0 | 82.9 | 79.2 | 77.8 | |
| 50+ | 535 | 79.6 | 64.1 | 79.3 | 80.7 | 83.8 | 88.4 | 77.4 | 84.1 | |
| p value Fisher | 0.043 | 0.384 | 0.241 | 0.332 | 0.503 | 0.073 | 0.513 | |||