Last month the Group Health Research Institute (GHRI) presented a webcast entitled A Healthy Dose: Strengthening Reach and Impact of Community Strategies from their background of working with stakeholders who have deep (25-30 years) experience working with community health initiatives. They have noticed a trend over the past ten years to include more information beyond the basics of the number of community members reached and initial (short term) impacts of community health projects in related reports.
GHRI have also studied data available from the Kaiser Foundation and other resources to find that the critical factor for successful long term impacts of community health projects is community involvement in them. Using the Reach Effectiveness Adoption Implementation (RE-AIM) model, which helps to best translate public health research into practice, they identified areas in projects ranging from low to high reach (fewer/greater numbers of community members involved) and low to high strength (lesser/greater impact on the health of the community).
Factors that calculate impact strength include whether a health project event is held one time or is a consistent part of the community’s environment, the degree that healthy options are the only choices available, and supporting community health projects with promotion and education. Some examples discussed during the webcast include building sidewalks (high reach, low strength) and establishing physical education classes at local schools (high reach, high strength).
The webcast recording and slides are available here, and their published findings in the American Journal of Evaluation are freely available at Using the Concept of “Population Dose” in Planning and Evaluating Community-Level Obesity Prevention Initiatives.