Trajectories of Symptoms and Impairment for Pediatric Patients With Functional Abdominal Pain: A 5-Year Longitudinal Study

Abstract

This prospective study characterizes trajectories of symptoms and impairment in pediatric patients with abdominal pain not associated with identifiable organic disease. The Children's Somatization Inventory and the Functional Disability Inventory were administered four times over 5 years to 132 patients (6-18 years old) seen in a pediatric gastroenterology clinic. Individual trajectories were empirically grouped and correlates of trajectory group membership at baseline were evaluated. A model with three unique trajectories was found to adequately fit both symptom and impairment data. Two trajectories indicated relatively long-term improvement and one indicated continued high levels of symptoms and impairment. At baseline, the long-term risk group did not have the most severe pain but had significantly more anxiety, depression, lower perceived self-worth, and more negative life events. These results indicate that several distinct trajectories of relatively long-term outcomes may exist in children with functional abdominal pain. One trajectory indicated long-term risk for a high level of symptoms and impairment. Psychosocial correlates of long-term risk for physical symptoms and impairment, such as child-reported stress and internalizing symptoms, may be useful for treatment planning.