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Quality of Life Research
Gepubliceerd in:

01-11-2008

Longitudinal factorial invariance of the PedsQL™ 4.0 Generic Core Scales Child Self-Report Version: One year prospective evidence from the California State Children’s Health Insurance Program (SCHIP)

Auteurs: James W. Varni, Christine A. Limbers, Daniel A. Newman, Michael Seid

Gepubliceerd in: Quality of Life Research | Uitgave 9/2008

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Abstract

Background

The measurement of health-related quality of life (HRQOL) in pediatric medicine and health services research has grown significantly over the past decade. The paradigm shift toward patient-reported outcomes (PROs) has provided the opportunity to emphasize the value and critical need for pediatric patient self-report. In order for changes in HRQOL/PRO outcomes to be meaningful over time, it is essential to demonstrate longitudinal factorial invariance. This study examined the longitudinal factor structure of the PedsQL™ 4.0 Generic Core Scales over a one-year period for child self-report ages 5–17 in 2,887 children from a statewide evaluation of the California State Children’s Health Insurance Program (SCHIP) utilizing a structural equation modeling framework.

Methods

Specifying four- and five-factor measurement models, longitudinal structural equation modeling was used to compare factor structures over a one-year interval on the PedsQL™ 4.0 Generic Core Scales.

Results

While the four-factor conceptually-derived measurement model for the PedsQL™ 4.0 Generic Core Scales produced an acceptable fit, the five-factor empirically-derived measurement model from the initial field test of the PedsQL™ 4.0 Generic Core Scales produced a marginally superior fit in comparison to the four-factor model. For the five-factor measurement model, the best fitting model, strict factorial invariance of the PedsQL™ 4.0 Generic Core Scales across the two measurement occasions was supported by the stability of the comparative fit index between the unconstrained and constrained models, and several additional indices of practical fit including the root mean squared error of approximation, the non-normed fit index, and the parsimony normed fit index.

Conclusion

The findings support an equivalent factor structure on the PedsQL™ 4.0 Generic Core Scales over time. Based on these data, it can be concluded that over a one-year period children in our study interpreted items on the PedsQL™ 4.0 Generic Core Scales in a similar manner.
vorige artikel Evaluation of the American version of the 30-item Endometriosis Health Profile (EHP-30)
volgende artikel Reliability in the ratings of quality of life between parents and their children of school age with cerebral palsy
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Metagegevens
Titel
Longitudinal factorial invariance of the PedsQL™ 4.0 Generic Core Scales Child Self-Report Version: One year prospective evidence from the California State Children’s Health Insurance Program (SCHIP)
Auteurs
James W. Varni
Christine A. Limbers
Daniel A. Newman
Michael Seid
Publicatiedatum
01-11-2008
Uitgeverij
Springer Netherlands
Gepubliceerd in
Quality of Life Research / Uitgave 9/2008
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-008-9389-3

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