Figure 2.

Risks for peptic ulcer bleeding. Presented are adjusted relative risks and 95% confidence intervals for peptic ulcer bleeding associated with the use of nitrates and gastroprotective agents in the population using NSAIDs or aspirin. ASA, aspirin; H2-RA, H₂-receptor antagonist; CI, confidence interval; NSAID, nonsteroidal anti-inflammatory drug; PPI, proton pump inhibitor. Data from Lanas and colleagues [42].