Objective

This study evaluated the effectiveness of a community health worker (CHW) diabetes self-management education (DSME) program, followed by two different approaches to maintain improvements in HbA_1c and other clinical and patient-centered outcomes over 18 months.

Research design and methods

The study randomized 222 Latino adults with type 2 diabetes and poor glycemic control from a federally qualified health center to 1) a CHW-led, 6-month DSME program or 2) enhanced usual care (EUC). After the 6-month program, participants randomized to the CHW-led DSME were further randomized to 1) 12 months of CHW-delivered monthly telephone outreach (CHW-only) or 2) 12 months of weekly group sessions delivered by peer leaders (PLs) with telephone outreach to those unable to attend (CHW+PL). The primary outcome was HbA_1c. Secondary outcomes were blood pressure, lipid levels, diabetes distress, depressive symptoms, understanding of diabetes self-management, and diabetes social support. Assessments were conducted at baseline and at 6, 12, and 18 months.

Results

Participants in the CHW intervention at the 6-month follow-up had greater decreases in HbA_1c (-0.45% [95% CI -0.87, -0.03]; P < 0.05) and in diabetes distress (-0.3 points [95% CI -0.6, -0.03]; P < 0.05) compared with EUC. CHW+PL participants maintained HbA_1c improvements at 12 and 18 months, and CHW-only participants maintained improvements in diabetes distress at 12 and 18 months. CHW+PL participants also had significantly fewer depressive symptoms at 18 months compared with EUC (-2.2 points [95% CI -4.1, -0.3]; P < 0.05). Participants in CHW-led DSME had significant improvements in diabetes social support and in understanding of diabetes self-management at 6 months relative to EUC, but these intervention effects were not sustained at 18 months.

Conclusions

This study demonstrates the effectiveness of a 6-month CHW intervention on key diabetes outcomes and of a volunteer PL program in sustaining key achieved gains. These are scalable models for health care centers in low-resource settings for achieving and maintaining improvements in key diabetes outcomes.

Objective

To examine which components of a culturally tailored community health worker (CHW) intervention improved glycemic control and intermediate outcomes among Latina/o and African American participants with diabetes.

Methods

The sample included 326 African American and Latina/o adults with type 2 diabetes in Detroit, MI. CHWs provided interactive group diabetes self-management classes and home visits, and accompanied clients to a clinic visit during the 6-month intervention period. We used path analysis to model the processes by which each intervention component affected change in diabetes self-efficacy, diabetes-related distress, knowledge of diabetes management, and HbA1c.

Results

The group-based healthy lifestyle component was significantly associated with improved knowledge. The group-based self-management section was significantly associated with reduced diabetes-related distress. Intervention class attendance was positively associated with self-efficacy. Diabetes self-management mediated the reductions in HbA1c associated with reductions in diabetes distress.

Conclusions

Path analysis allowed each potential pathway of change in the intervention to be simultaneously analyzed to identify which aspects of the CHW intervention contributed to changes in diabetes-related behaviors and outcomes among African Americans and Latinas/os.

Practice implications

Findings reinforce the importance of interactive group sessions in efforts to improve diabetes management and outcomes among Latina/o and African American adults with diabetes.

Objective

This study evaluated the effectiveness of a community health worker (CHW) diabetes self-management education (DSME) program, followed by two different approaches to maintain improvements in HbA_1c and other clinical and patient-centered outcomes over 18 months.

Research design and methods

The study randomized 222 Latino adults with type 2 diabetes and poor glycemic control from a federally qualified health center to 1) a CHW-led, 6-month DSME program or 2) enhanced usual care (EUC). After the 6-month program, participants randomized to the CHW-led DSME were further randomized to 1) 12 months of CHW-delivered monthly telephone outreach (CHW-only) or 2) 12 months of weekly group sessions delivered by peer leaders (PLs) with telephone outreach to those unable to attend (CHW+PL). The primary outcome was HbA_1c. Secondary outcomes were blood pressure, lipid levels, diabetes distress, depressive symptoms, understanding of diabetes self-management, and diabetes social support. Assessments were conducted at baseline and at 6, 12, and 18 months.

Results

Participants in the CHW intervention at the 6-month follow-up had greater decreases in HbA_1c (-0.45% [95% CI -0.87, -0.03]; P < 0.05) and in diabetes distress (-0.3 points [95% CI -0.6, -0.03]; P < 0.05) compared with EUC. CHW+PL participants maintained HbA_1c improvements at 12 and 18 months, and CHW-only participants maintained improvements in diabetes distress at 12 and 18 months. CHW+PL participants also had significantly fewer depressive symptoms at 18 months compared with EUC (-2.2 points [95% CI -4.1, -0.3]; P < 0.05). Participants in CHW-led DSME had significant improvements in diabetes social support and in understanding of diabetes self-management at 6 months relative to EUC, but these intervention effects were not sustained at 18 months.

Conclusions

This study demonstrates the effectiveness of a 6-month CHW intervention on key diabetes outcomes and of a volunteer PL program in sustaining key achieved gains. These are scalable models for health care centers in low-resource settings for achieving and maintaining improvements in key diabetes outcomes.