Role of postoperative endoscopy after peroral endoscopic myotomy: Evidence from a large cohort study

Figure 2 Number needed to screen for the detection of pathological findings on postoperative endoscopy. Bar charts depict the number needed to screen (NNS) required to detect pathological findings in patient subgroups. A-D: Subgroup-specific NNS estimates for unselected study population (A), patients with intraoperative adverse events (iAEs) (B), patients without iAEs (C), and patients who did not undergo programmed endoscopic evaluation (D); E: Summary of NNS shown in panels A-D. Within all panels, individual bars are labeled groups A-J and correspond to the categories described below each subfigure. All estimates are presented descriptively, and no formal statistical comparisons between categories were performed. NNS: Number needed to screen; iAE: Intraoperative adverse events; EGD: Esophagogastroduodenosocopy.