Table 2.

Correlation between PCI and reflux burden

Reflux parameter	Τ	P value
pH testing parameters
Distal AET	−0.059	0.34
Distal acid reflux events	−0.089	0.15
Proximal AET	−0.018	0.80
Proximal acid reflux events	−0.049	0.49
Impedance testing parameters
BET	−0.180b	<0.01a
Total reflux events	−0.120b	0.04a
Proximal reflux events	−0.099b	0.09b
Pharyngeal reflux events	−0.098	0.13

Analysis of acid reflux exposure was conducted only among patients tested off proton pump inhibitors.

AET, acid exposure time; BET, bolus exposure time; PCI, proximal contractile integral.

^aP < 0.05.

^bP < 0.10.