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J Pediatr Psychol. 2009 May;34(4):430-40. doi: 10.1093/jpepsy/jsn093. Epub 2008 Sep 9.

Children's Somatization Inventory: psychometric properties of the revised form (CSI-24).

Author information

  • 1Division of Adolescent Medicine and Behavioral Science, Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN 37232-3571, USA. lynn.walker@vanderbilt.edu

Abstract

OBJECTIVE:

To conduct a multimethod psychometric evaluation to refine the Children's Somatization Inventory (CSI) and to investigate its dimensionality.

METHOD:

The CSI was administered to 876 pediatric patients with chronic abdominal pain at their initial visit to a pediatric gastroenterology clinic. Tools from three psychometric models identified items that most effectively measured the construct of somatization and examined its dimensionality.

RESULTS:

Eleven statistically weak items were identified and removed, creating a 24-item CSI (CSI-24). The CSI-24 showed good psychometrics according to the three measurement models and correlated .99 with the original CSI. The CSI-24 has one dominant general factor but is not strictly unidimensional.

CONCLUSIONS:

The CSI-24 is a reliable and psychometrically sound refinement of the original CSI. Findings are consistent with the view that somatization has a strong general factor that represents a continuum of symptom reporting, as well as minor components that represent specific symptom clusters in youth with chronic abdominal pain.

PMID:
18782857
[PubMed - indexed for MEDLINE]
PMCID:
PMC2722132
Free PMC Article

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Figure 1.
Appendix III.
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