Thresholds of gastroesophageal reflux for diagnosis of esophageal reflux diseases

Figure 1 Distribution of the duration (A) and frequency (B) of pH fluctuations (a) and reflux episodes (b) in gastroesophageal reflux patients with (E+) and without (E-) esophagitis and in healthy controls.

Figure 2 Receiver operating characteristic curve analysis for thresholds of pH fluctuations (A) and reflux episodes (B). The true- and false-positive rates for thresholds of pH fluctuations (A) and reflux episodes (B) are shown.