Miranda A L van Tilburg1, Robyn Lewis Claar2, Joan M Romano3, Shelby L Langer4, Douglas A Drossman2, William E Whitehead2, Bisher Abdullah5, Rona L Levy4. 1. Center for Functional Gastrointestinal and Motility Disorders, University of North Carolina, Chapel Hill, NC; Campbell University, College of Pharmacy and Health Sciences, Buies Creek, NC. Electronic address: tilburg@med.unc.edu. 2. Center for Functional Gastrointestinal and Motility Disorders, University of North Carolina, Chapel Hill, NC. 3. Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA. 4. School of Social Work, University of Washington, Seattle, WA. 5. Prime Health Clinic, Puyallup, WA.
Abstract
OBJECTIVE: To examine the relative contributions of disease activity and psychological factors to self-reported symptoms and disability in children with Crohn's disease. STUDY DESIGN: Participants (n = 127 children age 8-18 years) completed questionnaires on symptom severity and disability, as well as psychological measures assessing anxiety, depression, pain beliefs and coping. Disease activity was measured by the Pediatric Crohn's Disease Activity Index. Structural equation modeling was used to test the effects of disease activity and psychological factors on symptoms and disability. RESULTS: In the hypothesized model predicting symptoms, psychological factors (β = 0.58; P < .001) were significantly associated with disease symptoms but disease activity was not. The model for disability yielded significant associations for both psychological factors (β = 0.75; P < .001) and disease activity (β = 0.61, P < .05). CONCLUSION: Crohn's disease symptoms in children and adolescents are not only driven by disease activity. Coping, anxiety, depression, and cognition of illness are important in the patient-reporting of symptom severity and disability. Physicians need to be aware that symptom self-reporting can be driven by psychological factors and may not always be simply an indicator of disease activity. TRIAL REGISTRATION: ClinicalTrials.gov: NCT00679003.
OBJECTIVE: To examine the relative contributions of disease activity and psychological factors to self-reported symptoms and disability in children with Crohn's disease. STUDY DESIGN:Participants (n = 127 children age 8-18 years) completed questionnaires on symptom severity and disability, as well as psychological measures assessing anxiety, depression, pain beliefs and coping. Disease activity was measured by the Pediatric Crohn's Disease Activity Index. Structural equation modeling was used to test the effects of disease activity and psychological factors on symptoms and disability. RESULTS: In the hypothesized model predicting symptoms, psychological factors (β = 0.58; P < .001) were significantly associated with disease symptoms but disease activity was not. The model for disability yielded significant associations for both psychological factors (β = 0.75; P < .001) and disease activity (β = 0.61, P < .05). CONCLUSION:Crohn's disease symptoms in children and adolescents are not only driven by disease activity. Coping, anxiety, depression, and cognition of illness are important in the patient-reporting of symptom severity and disability. Physicians need to be aware that symptom self-reporting can be driven by psychological factors and may not always be simply an indicator of disease activity. TRIAL REGISTRATION: ClinicalTrials.gov: NCT00679003.
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