Abstract
BackgroundPedsQL Infant Scales (PedsQL-I) are used to assess parent-reported health-related quality of life for children younger than 2 years. We determined the feasibility, reliability, and validity of the Japanese version of the PedsQL-I.MethodsA total of 183 participants (parents) with infants aged 1–30 months were recruited from 8 day care centers and one pediatric clinic. Participants completed the PedsQL-I (infants aged 1–18 months), the PedsQL-I and the PedsQL-Toddler version (infants aged 19–30 months), and the Kessler-6 psychological distress scale (all participants). We determined feasibility, internal consistency, test–retest reliability, concurrent validity, convergent and discriminant validity, known-groups validity with regard to acute and chronic illness, and relative and transitional validity with PedsQL-Toddler for the use in infants aged 25–30 months.ResultsAll subscales were internally consistent (Cronbach’s alpha for 1–12 months: 0.88–0.98 and for 13–24 months: 0.85–0.97); test–retest reliability was acceptable (intra-class correlation coefficients > 0.40); and all scales were concurrently valid with the PedsQL-Toddler version (Pearson’s product-moment correlation coefficient for the total score = 0.74). The scales’ convergent and discriminant validity were acceptable (scaling success rate > 80%). Validation for known-groups showed that the Physical Health Summary score was sensitive to acute and chronic disease, the Psychosocial Health Summary score was sensitive to neither acute nor chronic disease, and the total score was sensitive to acute disease. Relative validity showed a ratio of 1.74 for the squared t values for the total score.ConclusionsThe PedsQL-I is suitable for assessing health-related quality of life in infants aged 1–24 months in prospective studies.
Highlights
Pediatric quality of life inventory (PedsQL) Infant Scales (PedsQL-I) are used to assess parent-reported health-related quality of life for children younger than 2 years
Seven questionnaires were excluded because participants with children aged 1–12 months had mistakenly completed the PedsQLI 13–24 months version
This study shows that the Japanese version of the PedsQL-I is a feasible, reliable, and satisfactory measure of Health-related quality of life (HRQOL) for infants aged 1–24 months
Summary
PedsQL Infant Scales (PedsQL-I) are used to assess parent-reported health-related quality of life for children younger than 2 years. Reliability, and validity of the Japanese version of the PedsQL-I In recent years, it has been accepted by medical practitioners and researchers that patient-reported outcomes (PROs) should be implemented into clinical practice and research, in addition to objective clinical outcomes such as laboratory values. Health-related quality of life (HRQOL), which is a PRO, assesses some aspects of quality of life affected by diseases and their treatment [1,2,3]. Aspects such as the level of physical, psychological, and social well-being are called generic HRQOL. HRQOL has established itself as an important outcome in clinical research, clinical practice, and community health [6,7,8]
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