Publication date: Available online 6 November 2017
Source:Academic Radiology
Author(s): Bosheng He, Jushun Yang, Jing Xiao, Jinhua Gu, Feixiang Chen, Lin Wang, Junbo Qian, Shenchu Gong
Rationale and ObjectivesObscure gastrointestinal bleeding (OGIB) is the bleeding from the gastrointestinal tract without definite source that persists and recurs after a negative endoscopic evaluation. The study aimed to systematically evaluate the diagnostic accuracy of computed tomography enterography on OGIB detection by meta-analysis.Materials and MethodsStudies were searched in relevant databases. With predefined inclusion criteria, eligible studies were included, followed by quality assessment using the Quality Assessment of Diagnostic Accuracy Studies scoring system. The Meta-DiSc software was used to implement the meta-analysis, and sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, and diagnostic odds ratio with their 95% confidence intervals (CIs) were used as the effect size. Publication bias was determined by Egger test.ResultsA set of nine studies was included in this meta-analysis, having a relatively high quality. Under the random effects model, the pooled sensitivity and specificity were 0.724 (95% CI: 0.651–0.789) and 0.752 (95% CI: 0.691–0.807), respectively. Under the fixed effects model, the pooled positive likelihood ratio, negative likelihood ratio, and diagnostic odds ratio were 2.949 (95% CI: 2.259–3.850), 0.393 (95% CI: 0.310–0.497), and 9.452 (95% CI: 5.693–15.692), respectively. The area under curve of the summary receiver operating characteristic curve was 0.7916 (95% CI: 0.723–0.860). No obvious publication bias was detected (t = 1.62, P = .181).ConclusionsComputed tomography enterography might be used as a complementary to video capsule endoscopy instead of an alternative for the detection of OGIB.
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