Community Health Workers in Diabetes Care in American Samoa

We will perform a clinical trial to test the effectiveness of a community health worker (CHW) and primary-care coordinated intervention to provide outreach, education and support to diabetes patients and their families. The outcomes at a one-year follow-up will include glycosolated hemoglobin (HbA1c), CVD risk factors, diet and exercise behaviors, and adherence to diabetes care guidelines. The intervention builds upon best practices to date with CHWs, by translating effective strategies to Samoans, an ethnic minority population with no prior intervention research, while also extending prior CHW research, by using a model that is potentially replicable anywhere that uses outreach strategies in the context of primary care. This application builds on the current more limited activities of CHWs at the Tafuna Family Health Center (TFHC), a primary care health center established in 1998, operated by the American Samoa Government Department of Health, and designated as a community health center by the U.S. Bureau of Primary Health Care in 2003.

We will conduct a randomized controlled trial to test the effectiveness of a CHW outreach intervention, compared to usual care (UC) in a wait-list control group. The specific aims are:

A.1. To improve control of diabetes: We hypothesize that the CHW outreach intervention group will have greater one-year reductions in glycosolated hemoglobin (HbA1c) levels compared to the UC group.

A.2. To improve cardiovascular risk factors: We hypothesize that the CHW outreach intervention group will have greater one-year reductions in systolic and diastolic blood pressure, BMI, and abdominal circumference compared to the UC Group.

A.3. To improve diet and physical activity behaviors: We hypothesize that the diabetes patients randomized to the CHW intervention will have a greater one-year increase in favorable dietary and physical activity behaviors associated with self-management of their diabetes compared to the UC group.

A.4. To improve adherence to processes of diabetes care. The CHW group will have a higher percent of diabetes patients with the following American Diabetes Association (ADA) standards of care: 1) at least two HBA1c tests in the last year (at least 3 months apart), 2) percent of patients with documentation of self-management goals in the past 12 months, 3) percent of patients with a dental exam in past year, 4) percent of patients with a dilated eye exam in the past year, 5) percent of patients with a documented foot exam in the past year. We hypothesize that the CHW intervention will outperform UC on these variables over one year.

Inclusion criteria

diagnosis of type 2 diabetes, age 21 years and above, resident of American Samoa receiving primary care at Tafuna Family Health Center -

Exclusion criteria

pregnancy, receiving kidney dialysis

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