Long-term results of graded pneumatic dilatation under endoscopic guidance in patients with primary esophageal achalasia

Table 3 Effect of age, LES pressure and esophageal diameter on the clinical benefit of the initial pneumatic dilation. ¹With 3 cm balloon

	Patients with successful initial pneumatic dilation (n = 24)	Patients with successful initial pneumatic dilation (%)	P
Age (yr)
< 35	4/14	28	< 0.01
35-55	11/17	65
> 55	9/11	82
LES pressure (mmHg)
< 30	6/12	50
30-45	13/21	62	NS
> 45	5/9	55
Esophageal diameter (cm)
< 3	4/7	57
3-4	11/21	52	NS
> 4	9/14	64

NS: Non significant.