24-hour esophageal pH-monitoring in children suspected of gastroesophageal reflux disease: Analysis of intraesophageal pH monitoring values recorded in distal and proximal channel at diagnosis

Table 3 Summary analysis of selected parameters of 24-h pH-monitoring in 232 children suspected of GERD; pH-monitoring with 2- channel probe

Groups of examined childrenwith specific ailment	pH-monitoring parameters-proximal channelrange of values; mean; standard deviation (± SD); median; statistical significance (P)
n = 232	Number of episodes ofacid GER (pH < 4)	Number of episodes of acid GER(pH < 4), lasting > 5 min	Duration of the longestepisode of acid GER (min)	Total acid GER index (%)	Acid GER index(supine position) (%)
Statistical significance between the groups (P)
Group 2 and 3
Group 2 and 4
Group 2 and 5	P = 0.0001	P = 0.0001	P = 0.0001	P = 0.0001	P = 0.0001
Group 3 and 4
Group 3 and 5
Group 4 and 5