The sensitivity, specificity, PPV, and NPV for erosive esophagitis were 50%, 90%, 56%, and 88% and for hiatal hernia were 54%, 67%, 83%, and 33%, respectively.

• 腐蚀性食管炎的ECE相对于BE的灵敏度，特异性，阳性预测值（PPV）以及阴性预测值（NPV）分别为50%25,90%25,56%25,和88%25，食道裂孔疝的ECE相对于BE的灵敏度，特异性，阳性预测值（PPV）以及阴性预测值（NPV）分别为54%25,67%25,83%25,和33%25。