Maximising the Impact of Speech and Language Therapy for Children With Speech Sound Disorder (The MISLToe‐SSD) Study: Developing a Core Outcome Set (COS) for Routine Data Collection From UK NHS Speech and Language Therapy Services

What is already known on this subject Speech and language therapy services in the United Kingdom are ideally placed to contribute to large-scale evaluations of services provided for children with speech sound disorder (SSD) due to the computerised routine collection of data related to client management and interventions. However, these routine data cannot currently be used to evaluate the effectiveness or efficiency of interventions for children with different subtypes of SSD due to a lack of uniformity in data collection. There are no agreed and validated outcomes, outcome measures, diagnostic protocols or agreed labels and definitions for the evidence-based interventions that can be used by services across the United Kingdom. What this study adds to existing knowledge Building on information from an umbrella review and practitioner workshops, a modified Delphi process with 66 SSD expert speech and language therapists from across the United Kingdom, was utilised to develop a core outcome set (COS) and a minimum dataset of common data elements. What are the potential or actual clinical implications of this study? The COS and minimum dataset can be used by speech and language therapy services to collect routine data in a way that can contribute to large-scale evaluations of the effectiveness and efficiency of interventions for children with SSD.