| Table 3: Pathogenesis of ulcer in the duodenal ulcer group (). |
| | Hp-positive patients () | n (%) |
| | Only HP-positive | 67 (44.1) | | HP positive + NSAID and/or ASA exposure | 62 (40.8) |
| | Hp negative patients () | |
| | NSAID and/or ASA exposure positive | 14 (9.2) | | NSAID and ASA exposure negative | 9 (5.9) |
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ASA: acetylsalicylic acid; Hp: Helicobacter pylori; NSAID: nonsteroid anti-inflammatory drug.
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