Table 1.

Correlation between the number of pharyngeal reflux episodes relative to the assumed pH level detected by the Dx-pH sensor and the number of GER episodes identified with MII-pH (proximal and distal) and the pH sensor.

Number of episodes detected by Dx-pH and MII-pH	R	p
LPR pH < 5.5 vs. proximal GER in MII-pH	-0.061485	0.780481
LPR pH < 5.5 vs. distal acid GER in pH monitoring	-0.182251	0.405236
LPR pH < 5.5 vs. distal GER in MII-pH	-0.188251	0.389678
LPR pH < 5 vs. proximal GER in MII-pH	-0.112918	0.607964
LPR pH < 5 vs. distal acid GER in pH monitoring	-0.171029	0.435239
LPR pH < 5 vs. distal GER in MII-pH	-0.198517	0.363855
LPR pH < 4.5 vs. proximal GER in MII-pH	-0.052490	0.811990
LPR pH < 4.5 vs. distal acid GER in pH monitoring	-0.193745	0.375732
LPR pH < 4.5 vs. distal GER in MII-pH	-0.164930	0.452029
LPR pH < 4 vs. proximal GER in MII-pH	-0.124503	0.571390
LPR pH < 4 vs. distal acid GER in pH monitoring	-0.071277	0.746559
LPR pH < 4 vs. distal GER in MII-pH	-0.218874	0.315676
LPR upon decrease of pH ≥ 10% relative to baseline vs. proximal GER in MII-pH	-0.201656	0.356162
LPR upon decrease of pH ≥ 10% relative to baseline vs. distal acid GER in pH monitoring	-0.091367	0.678426
LPR upon decrease of pH ≥ 10% relative to baseline vs. distal GER in MII-pH	-0.301609	0.161926

Dx-pH: pharyngeal pH monitoring; MII-pH: multichannel intraluminal pH-impedance; LPR: laryngopharyngeal reflux; GER: gastroesophageal reflux.