The psychometric study of the Serbian KINDL questionnaire for health-related quality of life assessment in children and adolescents

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Abstract

Scand J Caring Sci; 2009; 23; 361–368

The psychometric study of the Serbian KINDL questionnaire for health-related quality of life assessment in children and adolescents

Objectives:

Health-related quality of life (HRQOL) is the most frequently evaluated patient-reported outcome. It is unexplored in Serbia and there are no methods for its evaluation. This study was aimed to analyse the psychometric properties of the Serbian version of the KINDL questionnaire for HRQOL assessment in children and adolescents.

Methods:

The KINDL-Kid-S completed 100 children and the KINDL-Kiddo-S 92 adolescents. Both versions were descriptively analysed and explored the items–sub-scales relationships. Cronbach's coefficient was used to explore the reliability of the versions.

Results:

The means of all sub-scales were located on the positive side of the response scale. The total score was 78.84 for the KINDL-Kid-S and 75.51 for the KINDL-Kiddo-S. Within the versions, the items showed significant correlations with its sub-scale total score and the total score. Between the sub-scales, there were significant relationships also. The Cronbach's coefficient exceeded 0.8 for the internal consistency reliability of the total score in both, and ranged 0.45–0.7 for the sub-scales.

Conclusions:

Besides substantial inter- and intra-sub-scale correlations, the reliability coefficients of some sub-scales are low in the Serbian KINDL, emerging the needs for revisions before extensive uses.

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