1. Copyright © 2009 American Medical Association. All rights reserved.
From: Perioperative Supplemental Oxygen Therapy and Surgical Site InfectionA Meta-analysis of Randomized Controlled Trials
Arch Surg. 2009;144(4): doi: /archsurg
Figure Legend:
Literature search results (Quality of Reports of Meta-analyses [QUOROM] flowchart). ARDS indicates adult respiratory distress syndrome.
Date of download: 10/13/2017
Copyright © 2009 American Medical Association. All rights reserved.

2. Copyright © 2009 American Medical Association. All rights reserved.
From: Perioperative Supplemental Oxygen Therapy and Surgical Site InfectionA Meta-analysis of Randomized Controlled Trials
Arch Surg. 2009;144(4): doi: /archsurg
Figure Legend:
Effect of perioperative supplemental oxygen therapy on surgical site infection risk reduction. Risk ratios (RRs) with 95% confidence intervals (CIs) are shown for individual, combined, and sensitivity analysis (SA) values. 1 indicates Mayzler et al (RR, 0.667; 95% CI, ; P = .64); 2, Pryor et al (2.222; ; P = .03); 3, Belda et al (0.607; ; P = .04); 4, Greif et al (0.464; ; P = .02); 5, Myles et al (0.740; ; P = .04); overall (0.742; ; P = .006; I2 = 65.584); SA1, noncolorectal studies excluded (0.556; ; P = .002; I2 = 0.000); SA2, nitrous oxide studies excluded (0.551; ; P = .002; I2 = 0.000); SA3, the study by Pryor et al excluded (0.667; ; P = .000; I2 = 0.000); and SA4, the largest study excluded (0.744; ; P = .08; I2 = 74.186). Squares represent individual randomized controlled trials; lines attached to squares, individual 95% confidence intervals; diamonds, the combined effect of several (or all) meta-analyses.
Date of download: 10/13/2017
Copyright © 2009 American Medical Association. All rights reserved.

3. Copyright © 2009 American Medical Association. All rights reserved.
From: Perioperative Supplemental Oxygen Therapy and Surgical Site InfectionA Meta-analysis of Randomized Controlled Trials
Arch Surg. 2009;144(4): doi: /archsurg
Figure Legend:
Funnel plot to visually detect publication bias. Circles correspond to individual studies; diamond, logarithm of the overall risk ratio; and 0, no effect and equivalent to a risk ratio of 1.
Date of download: 10/13/2017
Copyright © 2009 American Medical Association. All rights reserved.