Table 3: Average reflux finding score (RFS) and its standard deviation (SD) in group of patients with extraesophageal reflux confirmed by pH monitoring (EER+) and group of patients without EER (EER−) using three different parameters (NOR: number of refluxes, AET: acid exposure time, and RAI: reflux area index). The two-sample Student’s t-test was for statistical analysis of differences between the EER+ and the EER− group.

Parameter EER+ EER− P NOR 8.00 ± 3.10 6.31 ± 2.67 0.0166 AET 7.93 ± 2.65 6.15 ± 2.83 0.0071 RAI 8.57 ± 3.00 6.16 ± 2.59 0.0007