Current practices, facilitators, and barriers experienced by program providers implementing the National Diabetes Prevention Program in Los Angeles County.

Individuals with prediabetes can lower their diabetes risk by participating in the National Diabetes Prevention Program (National DPP), an evidence-based, group lifestyle change program that is taught by a certified lifestyle coach. To date, studies have not explicitly compared National DPP implementation across multiple settings (i.e., types of organizations) to understand comparative setting advantages or challenges to engaging priority groups. The purpose of this study was to gain an in-depth understanding of: (a) the variation in National DPP implementation across clinic, community-based, and digital settings and (b) associated facilitators and barriers. The study focused on three core implementation domains: recruitment, retention, and data reporting. This study used a descriptive, qualitative approach to identify current practices, facilitators, and barriers to National DPP implementation by conducting semistructured key informant interviews in spring 2018 with 12 organizations delivering the National DPP in Los Angeles County. There was a general commonality between in-person settings (clinics and community-based), while the experiences of digital providers were relatively distinct. Recruitment and retention were widely described by all settings as labor- and time-intensive, while data reporting was seen as relatively less burdensome. All respondents reported using multiple recruitment strategies. Lifestyle coaches were seen as key to retention, and they spent substantial time engaging with participants outside of class, which often was not accounted for in program costs. Data reporting was easier for organizations that invested in sophisticated data management systems and had staff with sufficient data experience. This study advances knowledge around the translation of the National DPP in diverse settings in the nation's largest county and highlights opportunities for targeted, setting-specific support.