HP and gastritis: Furthermore, when we evaluated the endoscopic gastritis classification in the Hp+ versus Hp− groups according to its location, intensity, and category (Table 2), we observed significant differences between the groups, due to a higher prevalence of pangastritis (Hp+ = 48.8% vs Hp− = 39.4%, p < 0.01) and severe lesions in the Hp+ group (Hp+ = 12.9% versus Hp− = 6.9%, p < 0.01).