An Updated Meta-analysis: Similar Clinical Efficacy of Anterior and Posterior Approaches in Peroral Endoscopic Myotomy (POEM) for Achalasia

Figure 4

(a) Forest plot, Comparison of the length of total myotomy before balancing baseline; (b) Forest plot, Length of total myotomy difference between anterior and posterior approaches after balancing baseline Labels 1 and 2 were sectionalizations inside the study. They grouped these factors as follows: preoperative intervention/non-preoperative intervention (Tang, 2017), FTM/CM (Duan, 2017), Chagas/idiopathic (Farias, 2020), and anterior/posterior (Ramchandani, 2018; Tan, 2018).

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