Abstract
BackgroundThe Pediatric Quality of Life Inventory™ (PedsQL™) is a child self-report and parent proxy-report instrument designed to assess health-related quality of life (HRQOL) in healthy and ill children and adolescents. It has been translated into over 70 international languages and proposed as a valid and reliable pediatric HRQOL measure. This study aimed to assess the psychometric properties of the Korean translation of the PedsQL™ 4.0 Generic Core Scales.MethodsFollowing the guidelines for linguistic validation, the original US English scales were translated into Korean and cognitive interviews were administered. The field testing responses of 1425 school children and adolescents and 1431 parents to the Korean version of PedsQL™ 4.0 Generic Core Scales were analyzed utilizing confirmatory factor analysis and the Rasch model.ResultsConsistent with studies using the US English instrument and other translation studies, score distributions were skewed toward higher HRQOL in a predominantly healthy population. Confirmatory factor analysis supported a four-factor and a second order-factor model. The analysis using the Rasch model showed that person reliabilities are low, item reliabilities are high, and the majority of items fit the model's expectation. The Rasch rating scale diagnostics showed that PedsQL™ 4.0 Generic Core Scales in general have the optimal number of response categories, but category 4 (almost always a problem) is somewhat problematic for the healthy school sample. The agreements between child self-report and parent proxy-report were moderate.ConclusionThe results demonstrate the feasibility, validity, item reliability, item fit, and agreement between child self-report and parent proxy-report of the Korean version of PedsQL™ 4.0 Generic Core Scales for school population health research in Korea. However, the utilization of the Korean version of the PedsQL™ 4.0 Generic Core Scales for healthy school populations needs to consider low person reliability, ceiling effects and cultural differences, and further validation studies on Korean clinical samples are required.
Highlights
The Pediatric Quality of Life InventoryTM (PedsQLTM) is a child self-report and parent proxy-report instrument designed to assess health-related quality of life (HRQOL) in healthy and ill children and adolescents
Health-related quality of life (HRQOL) measures should be based on patient's perceptions through self-assessment, use understandable and age appropriate language, provide evidence of acceptable or good reliability and validity, assess multiple dimensions, and consist of a 'core' set of questions as well as a set of specific items for different conditions
This study aimed to assess the psychometric properties of the Korean translation of the PedsQLTM Generic Core Scales for Korean school children and adolescents
Summary
The Pediatric Quality of Life InventoryTM (PedsQLTM) is a child self-report and parent proxy-report instrument designed to assess health-related quality of life (HRQOL) in healthy and ill children and adolescents. It has been translated into over 70 international languages and proposed as a valid and reliable pediatric HRQOL measure. Health-related quality of life (HRQOL) measures should be based on patient's perceptions through self-assessment, use understandable and age appropriate language, provide evidence of acceptable or good reliability and validity, assess multiple dimensions, and consist of a 'core' set of questions as well as a set of specific items for different conditions. The PedsQLTM 4.0 Generic Core Scales cover physical, emotional and social functioning which are the core dimensions of health as delineated by the World Health Organization (WHO), as well as role (school) functioning
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