486-P: Does Racial Homogeneity within an Organization Affect Non-Hispanic Black Participant Performance Outcomes in the National Diabetes Prevention Program (National DPP)

The National DPP is a partnership of public and private organizations working together to build a nationwide infrastructure to deliver a lifestyle change program proven to prevent or delay onset of type 2 diabetes in adults with prediabetes. As of October 2020, there have been 444,087 eligible participants, in 1,342 organizations, ever enrolled in the National DPP lifestyle change program. This analysis only included participants who met the requirements of program completion prior to March 1, 2020 (82,021 in 1,013 organizations). Of these participants, 10,612 were classified as Non-Hispanic/Black Only (N-HB) based on their reported race identification. The N-HB participants were divided into 2 groups: Primarily N-HB organization enrollment (more than half of participants in the organization identify as N-HB: 3,344 in 122 organizations) and non-Primarily N-HB organization enrollment (≤ half of the participants in the organization identify as N-HB: 7,268 in 891 organizations). Primarily N-HB organizations achieved at least preliminary recognition at a slightly higher rate (93.4%) than non-Primarily N-HB organizations (90.6%). However, Primarily N-HB organizations were less likely to meet the requirements for full recognition (51.6%) than non-Primarily N-HB organizations (67.5%). For Primarily N-HB organizations that achieved preliminary recognition, 85% missed the requirement of 5% weight loss. For most, this was the only missed requirement. However, despite the failure to achieve 5% weight loss, N-HB participants in Primarily N-HB organizations lost more weight (4.7%) than N-HB participants in non-Primarily N-HB organizations (4.3 %), and more than N-HB participants overall (4.4 %). These results could indicate that N-HB participants perform better with regards to weight loss when they enroll in Primarily N-HB organizations as opposed to non-Primarily N-HB organizations.