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Journal of Pediatric Psychology Advance Access published online on July 13, 2006
Journal of Pediatric Psychology, doi:10.1093/jpepsy/jsl021
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© The Author 2006. Published by Oxford University Press on behalf of the Society of Pediatric Psychology. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org
Received August 31, 2005
Revised June 6, 2006
Accepted June 10, 2006

Article

Exploratory and Confirmatory Factor Analysis of the Child Uncertainty in Illness Scale Among Children with Chronic Illness

Ahna L. H. Pai PhD 1 *, Larry L. Mullins PhD 2, Dennis Drotar PhD 3, Christopher Burant PhD, MACTM 4, Janelle Wagner PhD 5, and John M. Chaney PhD 6

1 Children’s Hospital of Philadelphia
2 University of Oklahoma Health Science Center
3 Rainbow Babies and Children’s Hospital; Case Western Reserve University School of Medicine
4 Case Western Reserve University School of Medicine
5 Medical University of South Carolina
6 Oklahoma State University

* To whom correspondence should be addressed.
Ahna L. H. Pai, E-mail: paia{at}email.chop.edu


  Abstract

Objective To conduct an exploratory factor analysis (EFA) and a confirmatory factor analysis (CFA) of the Child Uncertainty in Illness Scale (CUIS) with a sample of children and adolescents with a chronic health condition. Developmental differences in factor structure were also examined. Methods A sample of 373 children aged 8-18 years with chronic conditions completed the CUIS as a part of a larger battery of measures. Results The EFA yielded a 16-item two-factor model termed Unpredictability/Ambiguity and Comprehension. The CFA yielded a 14-item two-factor model that fits the data very well, where {chi}2(df = 74) = 95.396, Comparative Fit Index (CFI) = .973, Tucker Lewis Index (TLI) = .967, and Root Mean Square error of approximation (RMSEA) = .038. No developmental differences were found in underlying factor structures: {Delta}{chi}2(df = 12) = 17.754, {Delta}CFI = .004, {Delta}TLI = -.001, and {Delta}RMSEA = .000. Conclusions The two-factor CUIS measure could be a useful tool for assessing illness uncertainty among children with chronic illness.

Keywords: Child Uncertainty in Illness Scale; childhood chronic condition; confirmatory factor analysis; exploratory factor analysis; illness uncertainty.
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