Table 2 RE-AIM dimensions, questions and UC DPP-specific metrics

Reach

What proportion of eligible participants a) were excluded, b) took part and c) how representative were those who participated?

• Estimate persons reached based on the number eligible within each campus and across UC (received targeted outreach and enrolled in DPP)

• Estimate persons engaged in DPP (attended > 9 and > 16 sessions)

• Report exclusions, participation rates, drop-outs and representativeness within each campus and across UC

Effectiveness

What impact did the intervention have on a) all participants who began the program; b) on process and primary outcomes; and c) on both positive and negative (unintended) consequences?

• Examine effectiveness (% weight change and DPP participation) within and between subjects (more detail below)

• Examine consistency of outcomes across sites and key subgroups (e.g.,  race and ethnicity)

Adoption

What proportion of stakeholders a) were excluded, b) participated and c) how representative were they?

• Assess representativeness of those making UC DPP related decisions with on each campus (i.e., those leading DPP efforts, implementation and maintenance)

• Report types of key campus stakeholders involved within each campus and variations across UC

Implementation

To what extent were the various intervention components delivered as intended, especially when conducted by different non-research staff?

• Assess facilitators and barriers to initiative implementation; examine how these vary across campuses and over time

• Assess unintended consequences of implementation (i.e., support or resources pulled away from other programs)

• Assess if UC DPP milestones are followed at all campuses or only partially implemented at some locations

• Assess fidelity for at least two of 16 core DPP sessions at each campus

• Assess similarities and differences in strategies across campuses (e.g., recruitment and engagement efforts, reported costs of program delivery)

Maintenance

To what extent was intervention maintained and what adaptations were required to maintain it? How was the original protocol modified? What was the attrition rate; were drop-outs representative?

• Examine UC DPP outcomes within and across campuses, including attrition.

• Report the degree to which UC DPP milestones were met over time

• Report the degree to which initiative is integrated with campus workflow

• Report whether the local and UC leadership provide upkeep and necessary support (e.g., staff)