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Obesity Modifies the Association of Race/Ethnicity with Medication Adherence in the CARDIA Study

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Author Info

  • Maribel Salas

    (Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA)

  • Catarina I. Kiefe

    (Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA)

  • Pamela J. Schreiner

    (Division of Epidemiology & Community Health, University of Minnesota, Minneapolis, Minnesota, USA)

  • Yongin Kim

    (Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA)

  • Lucia Juarez

    (Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA)

  • Sharina D. Person

    (Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA)

  • O. Dale Williams

    (Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA)

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    Abstract

    Objective: To assess associations between race/ethnicity and medication adherence, and the potential modifying effects of weight category (normal, overweight, obese) in a community-based sample. Study design and setting: We studied 1355 participants from the CARDIA (Coronary Artery Risk Development in Young Adults) study who were taking prescription medications in 2000-1. Medication adherence, as rated on the four-item Morisky medication adherence scale (score of 4 = maximum adherence), was reported for all participants. Results: The mean age +- SD of participants was 40 +- 3.6 years; 45% were African American and 36% were male. Overall, Whites had a higher proportion of maximum adherence than African Americans (59 vs 41%, respectively; p = 0.001). However, this difference was statistically significant only for participants within the normal weight category, of whom 54% of Whites were maximally adherent versus 35% of African Americans (p < 0.05). After adjustment for possible confounding covariates, race/ethnicity was associated with adherence only in those of normal weight: the odds ratio for maximum adherence in Whites versus African Americans of normal weight was 1.98 (95% CI 1.13, 3.47). Within race/ethnicity subgroups, weight category was associated with adherence in Whites but not in African Americans. Conclusion: Weight category modifies the association of race/ethnicity with medication adherence. The high levels of non-adherence observed among African Americans and obese and overweight Whites bodes poorly for treatment of obesity-associated diseases such as cardiovascular disease or diabetes mellitus.

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    Bibliographic Info

    Article provided by Springer Healthcare | Adis in its journal The Patient - Patient-Centered Outcomes Research.

    Volume (Year): 1 (2008)
    Issue (Month): 1 ()
    Pages: 41-54
    Download reference. The following formats are available: HTML (with abstract), plain text (with abstract), BibTeX, RIS (EndNote, RefMan, ProCite), ReDIF
    Handle: RePEc:wkh:thepat:v:1:y:2008:i:1:p:41-54

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    Keywords: Ethnic-groups; Obesity; Patient-compliance;

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