Literacy, self-efficacy, and HIV medication adherence

Michael S. Wolf*, Terry C. Davis, Chandra Y. Osborn, Silvia Skripkauskas, Charles L. Bennett, Gregory Makoul

*Corresponding author for this work

Research output: Contribution to journalArticle

197 Scopus citations

Abstract

Objective: We examined the relationship between patient literacy level and self-reported HIV medication adherence, while estimating the mediating roles of treatment knowledge and self-efficacy on this relationship. Methods: Structured patient interviews with a literacy assessment, supplemented by medical chart review, were conducted among 204 consecutive patients receiving care at infectious disease clinics in Shreveport, Louisiana and Chicago, Illinois. Literacy was measured using the Rapid Estimate of Adult Literacy in Medicine (REALM), while the Patient Medication Adherence Questionnaire (PMAQ) was used to assess medication self-efficacy and adherence to antiretroviral regimens in the past 4 days. Results: Approximately one-third of patients (30.4%) were less than 100% adherent to their regimen, and 31.4% had marginal to low literacy skills. In multivariate analyses, low literate patients were 3.3 times more likely to be non-adherent to their antiretroviral regimen (p < 0.001). Patients' self-efficacy, but not knowledge, mediated the impact of low literacy on medication adherence (AOR 7.4, 95% CI 2.7-12.5). Conclusion: While low literacy was a significant risk factor for improper adherence to HIV medication regimens in our study, self-efficacy mediated this relationship. Practice implications: Comprehensive intervention strategies that go beyond knowledge transfer may be needed to address self-efficacy among patients across all literacy levels to be successful in the management of difficult medication schedules.

Original languageEnglish (US)
Pages (from-to)253-260
Number of pages8
JournalPatient education and counseling
Volume65
Issue number2
DOIs
StatePublished - Feb 1 2007

Keywords

  • HIV
  • Health literacy
  • Knowledge
  • Literacy
  • Medication adherence
  • Self-efficacy

ASJC Scopus subject areas

  • Medicine(all)

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    Wolf, M. S., Davis, T. C., Osborn, C. Y., Skripkauskas, S., Bennett, C. L., & Makoul, G. (2007). Literacy, self-efficacy, and HIV medication adherence. Patient education and counseling, 65(2), 253-260. https://doi.org/10.1016/j.pec.2006.08.006