Content validity of the PedsQL 3.2 Diabetes Module in newly diagnosed patients with Type 1 diabetes mellitus ages 8-45.
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OBJECTIVES: The content validity of the 28-item PedsQL 3.0 Diabetes Module has not been established in research on pediatric and adult patients with newly diagnosed Type 1 diabetes across a broad age range. This study aimed to document the content validity of three age-specific versions (8-12 years, 13-18 years, and 18-45 years) of the PedsQL Diabetes Module in a population of newly diagnosed patients with Type 1 diabetes. METHODS: The study included in-depth interviews with 31 newly diagnosed patients with Type 1 diabetes between the ages of 8 and 45 years, as well as 14 parents and/or caregivers of child and teenage patients between the ages of 8 and 18 years of age; grounded theory data collection and analysis methods; and review by clinical and measurement experts. RESULTS: Following the initial round of interviews, revisions reflecting patient feedback were made to the Child and Teen versions of the Diabetes Module, and an Adult version of the Diabetes Module was drafted. Cognitive interviews of the modified versions of the Diabetes Module were conducted with an additional sample of 11 patients. The results of these interviews support the content validity of the modified 33-item PedsQL 3.2 Diabetes Module for pediatric and adult patients, including interpretability, comprehensiveness, and relevance suitable for all patients with Type 1 Diabetes. CONCLUSIONS: Qualitative methods support the content validity of the modified PedsQL 3.2 Diabetes Module in pediatric and adult patients. It is recommended that the PedsQL 3.2 Diabetes Module replaces version 3.0 and is suitable for measuring patient-reported outcomes in all patients with newly diagnosed, stable, or long-standing diabetes in clinical research and practice.
