Interpretability of the PedsQL™ Gastrointestinal Symptoms Scales and Gastrointestinal Worry Scales in Pediatric Patients With Functional and Organic Gastrointestinal Diseases

J Pediatr Psychol. 2015 Jul;40(6):591-601. doi: 10.1093/jpepsy/jsv005. Epub 2015 Feb 13.

Abstract

Objective: The present study investigates the clinical interpretability of the Pediatric Quality of Life Inventory™ (PedsQL™) Gastrointestinal Symptoms Scales and Worry Scales in pediatric patients with functional gastrointestinal disorders or organic gastrointestinal diseases in comparison with healthy controls.

Methods: The PedsQL™ Gastrointestinal Scales were completed by 587 patients with gastrointestinal disorders/diseases and 685 parents, and 513 healthy children and 337 parents. Minimal important difference (MID) scores were derived from the standard error of measurement (SEM). Cut-points were derived based on one and two standard deviations (SDs) from the healthy reference means.

Results: The percentages of patients below the scales' cut-points were significantly greater than the healthy controls (most p values ≤ .001). Scale scores 2 SDs from the healthy reference means were within the range of scores for pediatric patients with a gastrointestinal disorder. MID values were generated using the SEM.

Conclusions: The findings support the clinical interpretability of the new PedsQL™ Gastrointestinal Symptoms Scales and Worry Scales.

Keywords: PedsQL.; gastrointestinal symptoms; minimal important difference; patient-reported outcomes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Anxiety / complications
  • Anxiety / diagnosis*
  • Anxiety / psychology*
  • Attitude to Health*
  • Child
  • Child, Preschool
  • Female
  • Gastrointestinal Diseases / complications
  • Gastrointestinal Diseases / diagnosis*
  • Gastrointestinal Diseases / psychology*
  • Humans
  • Male
  • Parents
  • Pediatrics
  • Psychometrics
  • Quality of Life
  • Reproducibility of Results
  • Surveys and Questionnaires / standards*