• Patient Educ Couns · Jul 2012

    Mechanisms underlying the relationship between health literacy and glycemic control in American Indians and Alaska Natives.

    • Angela G Brega, Alfonso Ang, William Vega, Luohua Jiang, Janette Beals, Christina M Mitchell, Kelly Moore, Spero M Manson, Kelly J Acton, Yvette Roubideaux, and Special Diabetes Program for Indians Healthy Heart Demonstration Project.
    • Centers for American Indian and Alaska Native Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA. angela.brega@ucdenver.edu
    • Patient Educ Couns. 2012 Jul 1; 88 (1): 61-8.

    ObjectiveResearch suggests that health literacy (HL) is associated with clinical outcomes. Few studies, however, have examined the mechanisms accounting for this relationship. To understand why HL is related to outcomes, we tested a theoretical framework proposing that diabetes-related knowledge and behavior mediate (explain) the relationship between HL and glycemic control (i.e., A1c).MethodsAnalyses used baseline data from the Special Diabetes Program for Indians Healthy Heart Project (N=2594), an intervention to reduce cardiovascular risk among American Indians/Alaska Natives (AI/ANs) with diabetes. Three nested structural equation models tested the theoretical framework.ResultsModel 1 demonstrated that participants with stronger HL skills had better glycemic control. Model 2 tested whether diabetes-related behaviors accounted for this relationship. Self-monitoring of blood glucose significantly mediated the HL-A1c relationship. Model 3 examined the role of diabetes knowledge, showing that it mediated the relationship between HL and dietary behavior. When knowledge was included, behavior was no longer a significant mediator, suggesting that knowledge was the main driver of the relationship between HL with A1c.ConclusionInterventions to improve knowledge may be particularly important in enhancing outcomes among AI/ANs with diabetes.Practice ImplicationsStrategies known to enhance patient comprehension may enable low-literate patients to develop needed diabetes knowledge.Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

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