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Measuring health-related quality of life in young adolescents: Reliability and validity in the Norwegian version of the Pediatric Quality of Life Inventory™ 4.0 (PedsQL) generic core scales

Reinfjell, Trude; Diseth, Trond H.; Veenstra, Marijke; Vikan, Arne
Journal article, Peer reviewed
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http://hdl.handle.net/11250/2357208
Issue date
2006
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  • Institutt for psykologi [991]
  • Publikasjoner fra CRIStin - NTNU [7622]
Original version
Health and Quality of Life Outcomes 2006, 4:61   10.1186/1477-7525-4-61
Abstract
Background: Health-Related Quality of Life (HRQOL) studies concerning children and

adolescents are a growing field of research. The Pediatric Quality of Life Inventory (PedsQL™) is

considered as a promising HRQOL instrument with the availability of age appropriate versions and

parallel forms for both child and parents. The purpose of the current study was to evaluate the

psychometric properties of the Norwegian translation of the Pediatric Quality of Life Inventory

(PedsQL™) 4.0 generic core scale in a sample of healthy young adolescents.

Methods: A cross-sectional study of 425 healthy young adolescents and 237 of their caregivers

participating as a proxy. Reliability was assessed by Cronbach's alpha. Construct validity was

assessed using exploratory factor analysis and by exploring the intercorrelations between and

among the four PedsQL subscales for adolescents and their parents.

Results: All the self-report scales and proxy-report scales showed satisfactory reliability with

Cronbach's alpha varying between 0.77 and 0.88. Factor analysis showed results comparable with

the original version, except for the Physical Health scale. On average, monotrait-multimethod

correlations were higher than multitrait-multimethod correlations. Sex differences were noted on

the emotional functioning subscale, girls reported lower HRQOL than boys.

Conclusion: The Norwegian PedsQL is a valid and reliable generic pediatric health-related Quality

of Life measurement that can be recommended for self-reports and proxy-reports for children in

the age groups ranging from 13–15 years.
Publisher
BioMed Central
Journal
Health and Quality of Life Outcomes

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