A Systematic Review of Dietary Interventions for Low-Income Populations
Methods: Searches of online databases, reference lists and past reviews were conducted. Articles reporting the results of trials designed specifically for low-income populations, enrolling adults, and using a concurrent-control design were included in the review. Two trained coders independently extracted data from each report; the CALO-RE taxonomy was used to identify the specific behavior change components employed.
Results: Forty-seven articles from 1976 to 2013 were included; six described research conducted outside the US. Steps taken to tailor the intervention to a low-income population included formative research, pretesting, and reading level adjustments; the tailoring process was unclear in 14 reports (29.8%). Most reports operationalized ‘low-income’ by geography or receipt of public assistance; only eleven reports (23.4%) used a financial metric. The most commonly used approaches to behavior change were through instruction (70.0%), provision of normative information (42.6%), and behavioral modeling (31.9%).
Discussion: A more refined definition of ‘low-income’ and population-specific tailoring is needed to address dietary modification among underserved populations. Interventions incorporating hands-on learning, social support, and relapse prevention are recommended.
Learning Areas:Chronic disease management and prevention
Public health or related research
Social and behavioral sciences
Evaluate the scope, strengths and weaknesses of published dietary interventions for low-income populations. Describe the multiple definitions used to define “low-income” in dietary interventions. Identify approaches to behavior change employed in dietary intervention studies.
Keyword(s): Nutrition, Underserved Populations
Qualified on the content I am responsible for because: I have been the PI or Co-I on multiple federally-funded grants focusing on eliminating health disparities and improving health outcomes for historically disadvantaged populations
Any relevant financial relationships? No
I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.