Conceptual validation of a family-centered intervention for adults with type 1 and type 2 diabetes mellitus: insights from focus groups with healthcare professionals, patients, and families

The "Juntos com a Família + Capazes" programme was conceptually validated, prior to implementation, as a family-centred, theory-informed, and adaptable intervention for adults with diabetes mellitus and their families. This pre-implementation phase enables refinements to content, sequencing, language, and delivery strategies, strengthening cultural relevance, acceptability, and feasibility. Conducting conceptual validation before piloting ensured that both clinical expertise and lived experiences shaped the intervention, highlighting the value of focus groups in identifying adjustments that enhance its real-world applicability. Future research should evaluate its effectiveness, sustainability, and scalability across healthcare contexts.