Endoscopic balloon catheter dilatation via retrograde or static technique is safe and effective for cricopharyngeal dysfunction

Table 3 Predictors of clinical response n (%)

Characteristic	Clinical response		P value
	Y (19)	N (5)
Age, mean ± SD	61.9 ± 11.9	66.4 ± 22.4	0.48
Sex, Male	10 (53)	2 (40)	0.68
Technique
Retrograde	16	3	0.49
Static	3	2
Maximal dilator size (mean ± SD, mm)	19.2 ± 1.4	19.6 ± 0.9	0.25
Oropharyngeal dysfunction	11 (58)	2 (40)	0.68
Zenker’s diverticulum	4 (21)	2 (40)	0.45