EQ-5D-Y is designed for self-completion by children and adolescents aged 8-15 years. Proxy versions, for completion by observers, are also available. Please note that you should select a digital version if you want to collect EQ-5D-Y data digitally, or in an App
The PedsQL modules for pediatric oncology were designed to measure health-related quality of life dimensions specifically tailored for pediatric patients with cancer.
You can examine this article:
Literature Review: Health-related Quality of Life Measurement in Pediatric Oncology: Hearing the Voices of the Children