Mean Nocturnal Baseline Impedance and Post-reflux Swallow-induced Peristaltic Wave Index Could Identify Gastroesophageal Reflux Disease but pH-Impedance Metrics Alone Might Not Correlate With Proton Pump Inhibitor Response in Chinese Patients With Typical Reflux Symptoms.

As shown in Table 2 , about 14.6% of patients with AET < 4%, 21.7% of patients with AET 4-6%, and 30.2% of patients with AET > 6% were with esophagitis, and the proportions of esophagitis of patients with AET 4-6% and > 6% seemed higher than patients with AET < 4% from the perspective of the exact value, but it did not reach statistical significance.

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