Overall the Pediatric Quality of Life Inventory™ v4.0 Generic Core Scales (PedsQL GCS) and Child Health Utility 9D (CHU9D) instruments both demonstrated consistent psychometric robustness against a set of absolute criteria for the psychometric properties assessed in this study; however, the CHU9D was more variable in its performance with some of the psychometric properties such as acceptability and known group validity.

This study expands the evidence base of psychometric performance of the PedsQL GCS and CHU9D in a large representative cohort of Australian children and adolescents with common chronic health conditions.

Results from this study can aid in appropriate health-related quality-of-life instrument selection by researchers and clinicians, to ensure that clinical and policy decision-making outcomes are based on consistent and robust research and evaluations.