PMID- 20222914 OWN - NLM STAT- MEDLINE DCOM- 20110105 LR - 20100603 IS - 1365-2036 (Electronic) IS - 0269-2813 (Linking) VI - 31 IP - 11 DP - 2010 Jun TI - Meta-analysis: proton pump inhibitor use and the risk of community-acquired pneumonia. PG - 1165-77 LID - 10.1111/j.1365-2036.2010.04284.x [doi] AB - BACKGROUND: Observational studies examining the association between proton pump inhibitor (PPI) use and risk of community-acquired pneumonia are conflicting. AIM: To assess systematically the association between risk of community-acquired pneumonia and PPI use in adults. METHODS: We searched MEDLINE, EMBASE and CINAHL databases between 1988 and January 2010. Two reviewers independently selected studies based on eligibility criteria and extracted data. Included studies evaluated adults (> or =18 years) who took PPIs as an out-patient. The primary outcome was community-acquired pneumonia. Only observational studies with a comparison arm were included. RESULTS: Over 2600 citations were reviewed. Six studies were included. All were nested case-control studies. Meta-analysis found an increased risk of community-acquired pneumonia associated with PPI use [OR 1.36 (95% CI 1.12-1.65)]; significant heterogeneity remained (I(2) 92%, P < 0.001). In exploratory subgroup analysis, short duration of use was associated with an increased odds of community-acquired pneumonia [OR 1.92 (95% CI 1.40-2.63), I(2) 75%, P = 0.003], whereas chronic use was not [OR 1.11 (95% CI 0.90-1.38), I(2) 91%, P < 0.001], a significant interaction (P < 0.005). CONCLUSIONS: Heterogeneity precluded interpretation of the summary statistic. Exploratory analysis revealed that duration of PPI use may impact the risk of community-acquired pneumonia, a finding that should be explored in future studies. FAU - Johnstone, J AU - Johnstone J AD - Department of Medicine, McMaster University, Hamilton, ON, Canada. johnsj48@mcmaster.ca FAU - Nerenberg, K AU - Nerenberg K FAU - Loeb, M AU - Loeb M LA - eng PT - Comparative Study PT - Journal Article PT - Meta-Analysis DEP - 20100304 PL - England TA - Aliment Pharmacol Ther JT - Alimentary pharmacology & therapeutics JID - 8707234 RN - 0 (Anti-Ulcer Agents) RN - 0 (Proton Pump Inhibitors) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Anti-Ulcer Agents/*adverse effects/therapeutic use MH - Case-Control Studies MH - Community-Acquired Infections/*chemically induced MH - Female MH - Humans MH - Male MH - Middle Aged MH - Pneumonia/*chemically induced MH - Proton Pump Inhibitors/*adverse effects/therapeutic use MH - Risk Factors MH - Young Adult EDAT- 2010/03/13 06:00 MHDA- 2011/01/06 06:00 CRDT- 2010/03/13 06:00 PHST- 2010/03/13 06:00 [entrez] PHST- 2010/03/13 06:00 [pubmed] PHST- 2011/01/06 06:00 [medline] AID - APT4284 [pii] AID - 10.1111/j.1365-2036.2010.04284.x [doi] PST - ppublish SO - Aliment Pharmacol Ther. 2010 Jun;31(11):1165-77. doi: 10.1111/j.1365-2036.2010.04284.x. Epub 2010 Mar 4.