Comparing Quality of Life Instruments: Sizing Them Up versus Pediatric Quality of Life Inventory and Kid‑KINDL

Introduction: Children with overweight or obesity are very likely to experience health problems including low levels of psychological well‑being and impaired quality of life (QoL). Given that the importance of QoL includes policymaking measuring QoL is especially crucial. Therefore, comparing generic (Kid‑KINDL and Pediatric QoL Inventory [PedsQL]) and weight‑related (Sizing Them Up) measures could provide insights for healthcare providers to decide how and when to use which QoL instrument. Methods: I recruited 199 school children studied between 3rd and 6th grades from 11 schools in Southern Taiwan, and all the children completed child depression inventory (for depression) and Rosenberg self‑esteem scale (for self‑esteem); one of their parents completed Sizing Them Up, PedsQL, and Kid‑KINDL. Results: I constructed structural equation modeling to investigate the associations between these instruments, and the results indicated that self‑esteem had the strongest relationship with Kid‑KINDL; weight had the strongest relationship with Sizing Them Up. Moreover, both PedsQL and Kid‑KINDL could observe the depression among children. Conclusion: Healthcare providers may have insights to select appropriate measure to assess QoL for overweight/obese children according to my findings.