OBJECTIVES: We assessed whether community health workers (CHWs) could improve glycemic control among Mexican Americans with diabetes. METHODS: We recruited 144 Mexican Americans with type 2 diabetes between January 2006 and September 2008 into the single-blinded, randomized controlled Mexican American Trial of Community Health Workers (MATCH) and followed them for 2 years. Participants were assigned to either a CHW intervention, delivering self-management training through 36 home visits over 2 years, or a bilingual control newsletter delivering the same information on the same schedule. RESULTS: Intervention participants showed significantly lower hemoglobin A1c levels than control participants at both year 1 (delta = -0.55; p = 0.021) and year 2 (delta = -0.69; p = 0.005). We observed no effect on blood pressure control, glucose self-monitoring, or adherence to medications or diet. Intervention participants increased physical activity from a mean of 1.63 days per week at baseline to 2.64 days per week after 2 years. CONCLUSIONS: A self-management intervention delivered by CHWs resulted in sustained improvements in glycemic control over 2 years among Mexican Americans with diabetes. MATCH adds to the growing body of evidence supporting the use of CHWs to reduce diabetes-related health disparities.
Copyright by the American Public Health Association.

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