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Quality of Life Research

, Volume 19, Issue 10, pp 1501–1508 | Cite as

Reliability and validity of the Iranian version of the Pediatric Quality of Life Inventory™ 4.0 Generic Core Scales in adolescents

  • Parisa Amiri
  • Emad M. Ardekani
  • Sara Jalali-Farahani
  • Farhad Hosseinpanah
  • James W. Varni
  • Fazlollah Ghofranipour
  • Ali Montazeri
  • Fereidoun Azizi
Article

Abstract

Objective

The objective of this study was to investigate the reliability and validity of the Iranian version of the Pediatric Quality of Life Inventory™ 4.0 (PedsQL™ 4.0) Generic Core Scales in adolescents

Methods

After linguistic validation, the Iranian version of the PedsQL™ 4.0 was completed by 848 healthy and 26 chronically ill adolescents aged 13–18 years and their parents.

Results

The internal consistency as measured by Cronbach’s alpha coefficients exceeded the minimum reliability standard of .70. No floor effects were observed. Ceiling effects detected ranged from 1.5% for adolescent self-report total scale score to 42.2% for self-report social functioning. All monotrait-multimethod correlations were higher than multitrait-multimethod correlations. The intraclass correlation coefficients (ICC) between adolescent self-report and parent proxy-report showed good to excellent agreement. Exploratory factor analysis supported mainly comparable results with the original US English dialect version. The results of the confirmatory factor analysis for 5-factor models for both self-report and proxy-report indicated acceptable fit for the proposed models. Regarding gender and health status, as hypothesized from previous studies, girls reported lower health-related quality of life than boys on the total score, physical and emotional functioning, and healthy adolescents reported significantly higher health-related quality of life than those with chronic illnesses.

Conclusion

The findings support the initial reliability and validity of the Iranian version of the PedsQL™ 4.0 as a generic instrument to measure HRQOL of adolescents in Iran.

Keywords

Health-related quality of life PedsQL™ Iran Adolescents 

Abbreviations

HRQOL

Health-related quality of life

PedsQL™ 4.0

Pediatric Quality of Life Inventory™ 4.0

EFA

Exploratory factor analysis

CFA

Confirmatory factor analysis

Notes

Acknowledgments

We acknowledge the contribution of all field workers who conducted the data collection. Competing Interests: Dr. Varni holds the copyright and the trademark for the PedsQL™ and receives financial compensation from the Mapi Research Trust, which is a nonprofit research institute that charges distribution fees to for-profit companies that use the Pediatric Quality of Life Inventory™.

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Parisa Amiri
    • 1
  • Emad M. Ardekani
    • 1
  • Sara Jalali-Farahani
    • 1
  • Farhad Hosseinpanah
    • 1
  • James W. Varni
    • 2
  • Fazlollah Ghofranipour
    • 3
  • Ali Montazeri
    • 4
  • Fereidoun Azizi
    • 5
  1. 1.Obesity Research Center, Research Institute for Endocrine SciencesShahid Beheshti University of Medical SciencesTehranIran
  2. 2.Department of Pediatrics, College of Medicine, Department of Landscape Architecture and Urban PlanningCollege of Architecture, Texas A&M UniversityCollege StationUSA
  3. 3.Health Education DepartmentTarbiat Modares UniversityTehranIran
  4. 4.Department of Mental HealthIranian Institute for Health Sciences Research, ACECRTehranIran
  5. 5.Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical SciencesTehranIran

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