Figure 4. Gastric intestinal metaplasia (GIM), per-lesion analysis of diagnostic performance of narrow band imaging (NBI).
A. Pooled sensitivity for NBI to differentiate GIM; B. Pooled specificity for NBI to differentiate GIM; C. The summary receiver operating characteristic (SROC) cure for diagnosis by NBI. CI, confidence interval; df, degrees of freedom; AUC, area under curve; SE, standard error.