Safety and Efficacy of the Supine Position with the Right Shoulder Raised versus the Left Lateral Position in Peroral Endoscopic Myotomy for Achalasia: A Large-Sample Retrospective Study

Table 4

Multivariate regression analysis of operative time on course of disease, whether full-thickness myotomy, tunnel length and operative position.

	B	Beta	F	R^2 (adjusted R^2)	t	p
Constant	36.515	—	13.320***	0.071; (0.066)	5.403	<0.001
Disease duration	0.278	0.102			2.770	0.006
Full-thickness myotomy	−6.472	−0.123			−2.964	0.003
Tunnel length	1.036	0.112			3.008	0.003
Operative position	6.480	0.123			2.922	0.004

Notes: *; **; ***.