Identifying Groups of Patient-Reported Gastro-Intestinal Symptoms Using Factor Analysis

Purpose/Objective(s)Beyond rectal bleeding, the dose-response relationship of gastro-intestinal (GI) symptoms, following pelvic radiation therapy (RT), is relatively uncertain. Patient-reported outcomes, presenting extensive descriptions of symptoms, may be useful for this purpose but straightforward translations between scoring systems can be challenging. The purpose of this study was to investigate if factor analysis can be useful in...