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Table 2 DeMeester score for different levels of the pH-metry probe above the proximal border of the lower esophageal sphincter (PBLES)

From: Discussing the influence of electrode location in the result of esophageal prolonged pH monitoring

GROUP 3 cm above PBLES 5 cm above PBLES P
GERD 25.67 ± 12.23 15.87 ± 11.71 0.008
CONTROL 11.27 ± 1.69 10.10 ± 2.33 0.37
P 0.001 0.022