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Table 9 The RE-AIM dimensions: definitions and levels of measurement
| RE-AIM dimension | Definition | Level of measurement |
|---|---|---|
| Reach | The absolute number, proportion, and representativeness of individuals who are willing to participate in a given initiative | Individual |
| Effectiveness | The impact of an intervention on important outcomes, including potential negative effects, quality of life, and economic outcomes | Individual |
| Adoption | The absolute number, proportion, and representativeness of settings and intervention agents (people who deliver the program) who are willing to initiate a program | Staff and Organizational |
| Implementation | The intervention agents’ fidelity to the various elements of an intervention’s protocol, including consistency of delivery as intended and the time and cost of the intervention | Staff and Organizational |
| Maintenance | The extent to which a program or policy becomes institutionalized or part of routine organizational practices and policies at the setting-level. At the individual level, maintenance is defined as the long-term effects of a program on outcomes 6 or more months after the most recent intervention contact | Individual and Organizational |
