Peroral endoscopic myotomy for achalasia and patients with normal lower-esophageal-sphincter integrated relaxation pressure: A propensity-score-matched retrospective study

Table 3 Comparisons of Eckardt score and GerdQ score between the two groups, n (%)

	Normal LES-IRP group (n = 71)	Increased LES-IRP group (n = 410)	P value
Follow-up period, median (Q1-Q3) (months)	25.0 (19.0-57.0)	41.0 (23.0-63.0)	0.010
Clinical success (Eckardt score ≤ 3)	62 (87.3)	374 (91.2)	0.298
Eckardt score, median (Q1-Q3)
Pre-treatment	7.0 (5.0-8.0)	7.0 (6.0-9.0)	0.132
Post-treatment	1.0 (0.0-2.0)	1.0 (0.0-2.0)	0.572
Pre-post change	5.0 (4.0-7.0)	6.0 (4.0-8.0)	0.068
GerdQ score, median (Q1-Q3)	6.0 (6.0-7.0)	6.0 (6.0-7.0)	0.200
GerdQ score ≥ 9	6 (8.5)	44 (10.7)	0.561

Data were expressed as median (Q1-Q3) or n (%). Continuous variables were compared by Mann-Whitney U test. Categorical variables were compared by χ² test or Fisher exact test. Q1: First quartile; Q3: Third quartile; LES-IRP: Lower esophageal sphincter integrated relaxation pressure.