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Racial Differences in Weight Loss Mediated by Engagement and Behavior Change
Loneke T Blackman Carr1, Carmen Samuel-Hodge2, Dianne Stanton Ward2
1The Samuel Dubois Cook Center on Social Equity at Duke University, Durham, North Carolina.
Ethnicity & Disease
|February 23, 2018
Summary
African American women experienced less weight loss than White women in an internet-delivered program. Improving website engagement may help close this weight loss gap.
Area of Science:
- Behavioral Science
- Public Health
- Health Disparities
Background:
- Weight loss interventions often show differential effectiveness across racial groups.
- Internet-delivered interventions offer scalable solutions but require engagement.
- Understanding mediators of weight loss is crucial for optimizing interventions.
Purpose of the Study:
- To compare weight loss outcomes between African American and non-Hispanic White women in an internet-delivered behavioral intervention.
- To identify factors mediating the relationship between race and weight loss.
Main Methods:
- A randomized controlled trial involving 170 overweight/obese women (African American and non-Hispanic White).
- Intervention included monthly group sessions and a weekly internet component with tailored feedback and resources.
- Multiple linear regression analyzed race-based differences in weight change.
Main Results:
- Non-Hispanic White women achieved significantly greater weight loss (-5.03%) compared to African American women (-2.39%).
- Higher website engagement (log-ins) and improved eating behaviors partially mediated this disparity.
- Greater engagement with online tools correlated with better weight loss outcomes.
Conclusions:
- A disparity in weight loss exists between African American and non-Hispanic White women in this internet-delivered intervention.
- Strategies to enhance website engagement and promote behavioral changes are needed to address this disparity.
- Future interventions should focus on optimizing online platform utilization for diverse populations.
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