1. Urgent colonoscopy in patients with lower GI bleeding: a systematic review and meta- analysis 
Abdul M. Kouanda, MD, Ma Somsouk, MD, Justin L. Sewell, MD, MPH, Lukejohn W. Day, MD 
Gastrointestinal Endoscopy 
Volume 86, Issue 1, Pages e1 (July 2017)
DOI: /j.gie
Copyright © 2017 American Society for Gastrointestinal Endoscopy Terms and Conditions

2. Figure 1 Results of literature search.
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3. Figure 2
Forest plot comparing bleeding source localization between urgent and elective colonoscopy performed in patients with lower GI bleeding. A, Time frame of 24 hours for performing an urgent colonoscopy. Heterogeneity: τ2 = .02; I2 = 80.5%; χ2 = 25.63, df = 5 (P ≤ .001). B, Time frame of 12 hours for performing an urgent colonoscopy. Heterogeneity: τ2 = .02; I2 = 60.4%; χ2 = 5.05, df = 2 (P = .08). The left-hand side of the graph favors elective colonoscopy, whereas the right-hand side favors urgent colonoscopy. CI, Confidence interval.
Gastrointestinal Endoscopy  , e1DOI: ( /j.gie )
Copyright © 2017 American Society for Gastrointestinal Endoscopy Terms and Conditions

4. Figure 3
Forest plot comparing the use of endoscopic therapy between urgent and elective colonoscopy performed in patients with lower GI bleeding. A, Time frame of 24 hours for performing an urgent colonoscopy. Heterogeneity: τ2 = .21; I2 = 73.2%; χ2 = 26.13, df = 7 (P ≤ .001). B, Time frame of 12 hours for performing an urgent colonoscopy. Heterogeneity: τ2 = 1.51; I2 = 76.6%; χ2 = 8.55, df = 2 (P = .01). The left-hand side of the graph favors elective colonoscopy, whereas the right-hand side favors urgent colonoscopy. CI, Confidence interval.
Gastrointestinal Endoscopy  , e1DOI: ( /j.gie )
Copyright © 2017 American Society for Gastrointestinal Endoscopy Terms and Conditions

5. Supplementary Figure 1
Forest plots comparing (A) patients receiving a blood transfusion, (B) rebleeding rate, (C) adverse event rate, and (D) mortality rate between urgent and elective colonoscopy performed in patients with lower GI bleeding. Heterogeneity: A, τ2 = .07; I2 = 85.6%; χ2 = 13.91, df = 2 (P = .001); B, τ2 =.07; I2 = 32.8%; χ2 = 4.46, df = 3 (P = .22); C, τ2 = .17; I2 = 86.6%; χ2 = 29.92, df = 4 (P ≤ .001); D, τ2 = .26; I2 = 17.0%; χ2 = 3.62, df = 3 (P = .31). CI, Confidence interval.
Gastrointestinal Endoscopy  , e1DOI: ( /j.gie )
Copyright © 2017 American Society for Gastrointestinal Endoscopy Terms and Conditions