Fig. 5
The sROC curves of O-CEGUS/D-CEGUS for discriminating ≤T1 and ≥T2 gastric cancer. a The sROC curves of the 11 included O-CEGUS–related papers. b The sROC curves of the five included D-CEGUS–related papers. c The sROC curves of nine O-CEGUS–related papers after excluding the sources of heterogeneity. d The sROC curves of four D-CEGUS–related papers after excluding the sources of heterogeneity. An empty circle represents each study’s sensitivity/specificity. A filled black circle represents the summary point for sensitivity/specificity. Dotted closed line, 95% confidence interval of the summary point; dashed closed line, 95% prediction region