Accuracy of Helicobacter pylori serology in two peptic ulcer populations and in healthy controls

Figure 2 Grade of inflammatory activity (no, mild, moderate, severe), grade of chronic gastritis (no, mild, moderate, severe) and semiquantitative numbers of H pylori (no, few = H pylori like organisms in 1-3 pits, some = H pylori like organisms in more than 3 pits but not all, many = H pylori like organisms in all pits) detected in gastric biopsies from 4 different biopsy sites (prepylorus, angulus, corpus and fundus) related to the mean value with 95% confidence intervals of IgG antibodies against H pylori in each category.