Prevention of stress-related ulcer bleeding at the intensive care unit: Risks and benefits of stress ulcer prophylaxis

Table 2 Acid suppression as a risk factor for pneumonia at the intensive care unit

Acid suppression as a risk factor for		Pneumonia
Barkun et al[16]	Meta-analysis	OR = 1.05 (95%CI: 0.69-1.62)
Alhazzani et al[2]	Meta-analysis	RR = 1.06 (95%CI: 0.73-1.52)
Khorvash et al[6]	Randomized controlled trial	14.1% without vs 36.4% with PPI, P < 0.001
Buendgens et al[6]	Retrospective cohort study	OR = 1.28 (95%CI: 0.95-1.73)

OR: Odds ratio; RR: Relative risk; PPI: Proton pump inhibitor.