Table 3.

Correlations Between High-resolution Manometry Parameters and Eckhardt Score

Parameter	r	P-value
Single swallow IRP	0.12	0.612
200 mL rapid drink challenge IRP	0.56	0.009
200 mL rapid drink challenge esophagogastric gradient	0.40	0.072
Timed barium column 1 minute	0.27	0.218
Timed barium column 5 minutes	0.32	0.150

IRP, integrated relaxation pressure.