1. Patient-Reported Outcomes for Irritable Bowel Syndrome Are Associated With Patients' Severity Ratings of Gastrointestinal Symptoms and Psychological Factors 
Jeffrey Lackner, James Jaccard, Charles Baum, Amanda Smith, Susan Krasner, Leonard Katz, Rebecca Firth, Tatayna Raby, Cathrine Powell 
Clinical Gastroenterology and Hepatology 
Volume 9, Issue 11, Pages e1 (November 2011)
DOI: /j.cgh
Copyright © 2011 AGA Institute Terms and Conditions

2. Figure 1
Path model guiding data analysis. Psychological factors impact IBS PROs indirectly through their effects on patient experiences of the 3 GI symptoms.
Clinical Gastroenterology and Hepatology 2011 9, e1DOI: ( /j.cgh )
Copyright © 2011 AGA Institute Terms and Conditions

3. Figure 2
Side-by-side histograms for PRO outcomes. On their respective 0 to 10 metrics: mean UCLA, 5.49; SD, 2.03; mean IBS-SS, 5.97; SD, 1.54.
Clinical Gastroenterology and Hepatology 2011 9, e1DOI: ( /j.cgh )
Copyright © 2011 AGA Institute Terms and Conditions