Seattle-King County Healthy Homes Project
Last updated: 2012
Evidence of model effectiveness
This model does not meet the criteria established by the Department of Health and Human Services (HHS) for an “evidence-based early childhood home visiting service delivery model” for the general population or for tribal populations because there are no high- or moderate-rated effectiveness studies of the model.
The Seattle–King County (SKC) Healthy Homes Project aimed to reduce asthma morbidity and asthma-triggered health care use and improve asthma-related quality of life by increasing asthma self-management skills and reducing exposure to indoor asthma triggers. The program, which targeted low-income households of children with persistent asthma, used two service delivery approaches: a high-intensity and a low-intensity model. The high-intensity model included an initial home visit by a community asthma nurse who provided patient education, training in self-management, the development of a patient-specific asthma action plan, and case management and review. Families then received up to six follow-up visits from a community health worker (CHW). CHWs provided in-home support, education, indoor trigger identification, and resources (including bedding covers, vacuums, and cleaning supplies) to address environmental triggers. Support for self-management, medication use, and communication with health care providers also were reinforced. The CHWs were educated and trained on asthma, asthma self-management, and the control of environmental asthma triggers. The low-intensity model included the initial home visit only. For more information, please read the Model Overview.
Extent of evidence
Criteria established by the U.S. Department of Health and Human Services
Notes: If the model does not meet criterion 3 but meets criteria 1 and 2 based on findings from subgroups, the impacts must be replicated in the same domain in two or more studies using non-overlapping analytic study samples. HomVEE assesses and reports criteria 4 and 5 for all models that have well-designed research, but meeting those two criteria is only required of models for which all findings are from randomized controlled trials. Please read the HHS criteria for evidence-based models for more information.