1. Efficacy of Esophageal Impedance/pH Monitoring in Patients With Refractory Gastroesophageal Reflux Disease, on and off Therapy 
Jason M. Pritchett, Muhammad Aslam, James C. Slaughter, Reid M. Ness, C. Gaelyn Garrett, Michael F. Vaezi 
Clinical Gastroenterology and Hepatology 
Volume 7, Issue 7, Pages (July 2009)
DOI: /j.cgh
Copyright © 2009 AGA Institute Terms and Conditions

2. Figure 1
Flow diagram of study design and likelihood of normal or abnormal impedance and wireless pH parameters.
Clinical Gastroenterology and Hepatology 2009 7, DOI: ( /j.cgh )
Copyright © 2009 AGA Institute Terms and Conditions

3. Figure 2
Box plot of % time pH <4 for day 1 and day 2 on the basis of impedance results (range, upper and lower quartile, and median values displayed).
Clinical Gastroenterology and Hepatology 2009 7, DOI: ( /j.cgh )
Copyright © 2009 AGA Institute Terms and Conditions

4. Figure 3
Flow diagram of likelihood of off-therapy pH findings as a function of on-therapy impedance data.
Clinical Gastroenterology and Hepatology 2009 7, DOI: ( /j.cgh )
Copyright © 2009 AGA Institute Terms and Conditions

5. Figure 4
Probability of being classified abnormal by wireless pH on the basis of total number of impedance events.
Clinical Gastroenterology and Hepatology 2009 7, DOI: ( /j.cgh )
Copyright © 2009 AGA Institute Terms and Conditions