Abstract
Purpose
The aim of this study was to evaluate the general measurement properties of the Serbian version of the Pediatric Quality of Life Inventory™ Version 4.0 Generic Core Scales (PedsQLTM) self-report versions for children and adolescents (8–18 years).
Methods
The PedsQLTM was completed by 238 children and adolescents. The version was descriptively analyzed first. Afterward, internal consistency and construct and convergent validity were analyzed using the classic test theory psychometrical procedures.
Results
The PedsQLTM scale score means ranged 70.65–88.34, with the total score was 80.74. Scale internal consistency reliability determined by Cronbach’s coefficient was above 0.7 for all except the School, 0.65, and Emotional Functioning Scale, 0.69. The statistics assessing the adequacy of the model in confirmatory factor analysis revealed poor model fit for the current structure of the PedsQLTM. Finally, the PedsQLTM total and psychosocial health showed convincing negative correlations with emotional and conduct problems, hyperactivity/inattention, and peer relationship problems.
Conclusions
The Serbian PedsQLTM scales have appropriate internal consistency reliability, sufficient for group evaluations, and good convergent validity against psychological constructs. However, there are problems regarding its current construct validity (factorial validity).
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References
Schmidt, S., & Bullinger, M. (2003). Current issues in cross-cultural quality of life instrument development. Archives of Physical Medicine and Rehabilitation, 84, 29–34.
Chassany, O., Sagnier, P., Marquis, P., Fullerton, S., & Aaronson, N. (2002). Patient reported outcomes: The example of health-related quality of life a European guideline document for the improved integration of health-related quality of life assessment in the drug regulatory process. Drug Information Journal, 36, 209–238.
Fayers, P. M., & Machin, D. (2007). Quality of life: The assessment, analysis and interpretation of patient-reported outcomes (2nd ed.). Chichester: Wiley.
Varni, J. W., Seid, M., & Kurtin, P. S. (2001). PedsQL 4.0TM: Reliability and validity of the pediatric quality of life inventory TM version 4.0 Generic Core Scales in healthy and patient populations. Medical Care, 39, 800–812.
http://www.pedsql.org. (Assessed on December 2th 2010).
Goodman, R. (1997). The strengths and difficulties questionnaire: A research note. Journal of Child Psychology and Psychiatry, 38, 581–586.
Ware, J. E., & Gandek, B. (1998). Methods for testing data quality, scaling assumptions, and reliability: The IQOLA project approach. Journal of Clinical Epidemiology, 51, 945–952.
Terwee, C. B., Bot, S. D. M., de Boer, M. R., et al. (2007). Quality criteria were proposed for measurement properties of health status questionnaires. Journal of Clinical Epidemiology, 60, 34–42.
Limbers, C. A., Newman, D. A., & Varni, J. W. (2008). Factorial invariance of child self-report across healthy and chronic health condition groups: A confirmatory factor analysis utilizing the PedsQLTM 4.0 Generic Core Scales. Journal of Pediatric Psychology, 33, 630–639.
Petersen, S., Hägglöf, B., Stenlund, H., & Bergström, E. (2009). Psychometric properties of the Swedish PedsQL, pediatric quality of life inventory 4.0 Generic Core Scales. Acta Paediatrica, 98, 1504–1512.
Nevitt, J., & Hancock, G. R. (2001). Performance of bootstrapping approaches to model test statistics and parameter standard error estimation in structural equation modeling. Structure Equation Model, 8, 353–377.
Meuleners, L. B., Lee, A. H., Binns, C. W., & Lower, A. (2003). Quality of life for adolescents: Assessing measurement properties using structural equation modeling. Quality of Life Research, 12, 283–290.
Varni, J. W., Burwinkle, T. M., & Seid, M. (2006). The PedsQL 4.0 as a school population health measure: Feasibility, reliability, and validity. Quality of Life Research, 15, 203–215.
Varni, J. W., Burwinkle, T. M., Seid, M., & Skarr, D. (2003). The PedsQLTM 4.0 as a pediatric population health measure: Feasibility, reliability, and validity. Ambulatory Pediatrics, 3, 329–341.
Gkoltsiou, K., Dimitrakaki, C., Tzavara, C., Papaevangelou, V., Varni, J. W., & Tountas, Y. (2008). Measuring health-related quality of life in Greek children: Psychometric properties of the Greek version of the pediatric quality of life inventory TM 4.0 Generic Core Scales. Quality Life Research, 17(2), 299–305.
Hao, Y., Tian, Q., Lu, Y., Chai, Y., & Rao, S. (2010). Psychometric properties of the Chinese version of the pediatric quality of life inventory 4.0 Generic Core Scales. Quality of Life Research [Epub ahead of print].
Beckstead, J. W., Yang, C. Y., & Lengacher, C. A. (2008). Assessing cross-cultural validity of scales: A methodological review and illustrative example. International Journal of Nursing Studies, 45(1), 110–119.
Bastiaansen, D., Koot, H. M., Bongers, I. L., Varni, J. W., & Verhulst, F. C. (2004). Measuring quality of life in children referred for psychiatric problems: Psychometric properties of the PedsQL 4.0 Generic Core Scales. Quality of Life Research, 13, 489–495.
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We cordially thanks to the reviewers’ comments that helped us to significantly improve the article.
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Stevanović, D., Lakić, A. & Damnjanović, M. Some psychometric properties of the Pediatric Quality of Life Inventory™ Version 4.0 Generic Core Scales (PedsQLTM) in the general Serbian population. Qual Life Res 20, 945–949 (2011). https://doi.org/10.1007/s11136-010-9833-z
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DOI: https://doi.org/10.1007/s11136-010-9833-z