Research on Gastroesophageal Reflux Disease Based on Dynamic Features of Ambulatory 24-Hour Esophageal pH Monitoring

Table 1

Sensitivity of the parameters.

Variables	Sensitivity (%)
Total percentage of monitoring time with pH below 4 (%)	83.6
The percentage of time with pH below 4 in an upright position (%)	72.7
The percentage of time with pH below 4 in a supine position	65.5
Number of reflux episodes (times)	81.9
Number of episodes longer than 5 minutes (times)	74.5
Longest reflux duration (minutes)	69.1
DeMeester scores	85.5