Endoscopic ultrasound-measured muscular thickness of the lower esophageal sphincter and long-term prognosis after peroral endoscopic myotomy for achalasia

Table 3 Risk factor analysis for recurrence using the Cox proportional hazards model

Variable	Univariate		Multivariate
	Hazard ratio (95%CI)	P value	Hazard ratio (95%CI)	P value
Age	0.943 (0.893-0.995)	0.033	0.920 (0.865-0.979)	0.008
Male sex	2.829 (0.629-12.712)	0.175	7.173 (1.277-40.286)	0.025
Disease duration	0.984 (0.963-1.006)	0.144	NA	0.402
Preoperative Eckardt score	1.296 (0.855-1.965)	0.222	-	-
LEMP ≥ 3 mm	0.606 (0.117-3.128)	0.550	-	-

CI: Confidence interval; LEMP: Lower esophageal muscularis propria; NA: Not assessed; -: Not included for analysis; CI: Confidence interval.