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Journal of Pediatric Psychology Advance Access originally published online on July 20, 2006
Journal of Pediatric Psychology 2006 31(7):703-713; doi:10.1093/jpepsy/jsj062
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© The Author 2005. Published by Oxford University Press on behalf of the Society of Pediatric Psychology. All rights reserved. For permissions, please e-mail: journals.permissions@oupjournals.org

Validation of a Symptom Provocation Test for Laboratory Studies of Abdominal Pain and Discomfort in Children and Adolescents

Lynn S. Walker, PhD1, Sara E. Williams, MS1, Craig A. Smith, PhD1, Judy Garber, PhD1, Deborah A. Van Slyke, PhD1, Tricia Lipani, MS1, John W. Greene, MD1, Howard Mertz, MD1 and Bruce D. Naliboff, PhD2

1 Vanderbilt University Medical Center and 2 University of California at Los Angeles

All correspondence concerning this article should be addressed to Lynn S. Walker, PhD, Division of Adolescent Medicine and Behavioral Science, 436 Medical Center South, Vanderbilt University Medical Center, Nashville, Tennessee 37232-3571. E-mail: lynn.walker{at}vanderbilt.edu.

Received April 5, 2004; revisions received September 26, 2004 and November 9, 2004; accepted November 10, 2004

Objective Assessed the convergent and discriminant validity of a water load symptom provocation test (WL-SPT) in creating visceral sensations similar to the naturally occurring sensations experienced by children with functional abdominal pain. Methods Participants were pediatric patients with functional abdominal pain (N = 110) and healthy school children (N = 120) between the ages of 8 and 16 years. Pain patients completed questionnaires describing gastrointestinal (GI) and nongastrointestinal (non-GI) symptoms associated with their typical abdominal pain episodes. Weeks later, the WL-SPT was administered to pain patients and well children. Before and immediately following the WL-SPT, children rated their symptoms. Results The WL-SPT produced (a) significant increases in children’s GI symptoms that were reliably predicted by the children’s naturally occurring GI symptoms, and (b) significantly greater increases in GI symptoms in pain patients than in well children. Conclusions The WL-SPT produces clinically relevant symptoms for laboratory studies of children with functional abdominal pain.

Key words: children; functional abdominal pain; pain perception; recurrent abdominal pain; visceral hypersensitivity.


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