Fig. 4From: Efficacy and safety of proton pump inhibitors for stress ulcer prophylaxis in critically ill patients: a systematic review and meta-analysis of randomized trialsPneumonia outcome. Data from 12 trials (n = 1471 patients) were included, analyzed using the random effects model. The risk of pneumonia was similar in both groups. PPI proton pump inhibitor, H2RA histamine-2-receptor antagonist. IV Inverse VarianceBack to article page