Background & Aims
Acronyms and abbreviations:AC (Absent contractility), BMI (Body mass index), CI (Confidence interval), DCI (Distal contractile integral), EMD (Esophageal motility disorder), ES (Eckardt score), GERD (Gastroesophageal reflux disease), HRM (High-resolution manometry), IEM (Ineffective esophageal motility), IRP (Integrated relaxation pressure), LES (Lower esophageal sphincter), LHM (Laparoscopic Heller myotomy), OR (Odds ratio), PD (Pneumatic dilation), POEM (Peroral endoscopic myotomy), RE (Reflux esophagitis)
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Hata Y and Sato H planned the study and drafted the manuscript; Hata Y, Sato H, Shimamura Y, Abe H, Shiwaku A, Shiota J, Sato C, Sakae H, Ominami M, Fukuda H, Ogawa R, Nakamura J, Tatsuta T, and Ikebuchi Y collected the data; Yokomichi H performed the statistical analysis; Ihara E and Inoue H interpreted the data and critically revised the article. All authors had access to the study data and have reviewed and approved the final manuscript.