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Change in Medication Adherence and Beliefs in Medicines Over Time in Older Adults

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  • Elizabeth Unni
  • Olayinka Shiyanbola
  • Karen Farris

Abstract

OBJECTIVE- The temporal component of medication adherence is important while designing interventions to improve medication adherence. Thus, the objective of this study was to determine how medication adherence and beliefs in medicines change over time in older adults. METHODS- A two-year longitudinal internet-based survey among adults 65+ years was used to collect data on medication adherence (Morisky 4-item scale) and beliefs in medicines (Beliefs about Medicines Questionnaire). Paired t-test and one-way ANOVA determined if a change in beliefs in medicines and medication adherence over time was significant. A multiple linear regression was used to determine the significant predictors of change in medication adherence over time. RESULTS- 436 respondents answered both baseline and follow-up surveys. Among all respondents, there was no significant change in adherence (0.58 ± 0.84 vs. 0.59 ± 0.84; p > 0.05), necessity beliefs (17.13 ± 4.31 vs. 17.10 ± 4.29; p > 0.05), or concern beliefs (11.70 ± 3.73 vs. 11.68 ± 3.77; p > 0.05) over time. For older adults with lower baseline adherence, there was a statistically significant improvement in adherence (1.45 ± 0.70 vs. 0.99 ± 0.97; p < 0.05); but no change in beliefs in medicines over time. The significant predictors of change in medication adherence over time were baseline adherence and baseline concern beliefs in medicines. CONCLUSION- With baseline adherence and baseline concern beliefs in medicines playing a significant role in determining change in adherence behavior over time, especially in individuals with lower adherence, it is important to alleviate medication concerns at the beginning of therapy for better adherence.

Suggested Citation

  • Elizabeth Unni & Olayinka Shiyanbola & Karen Farris, 2016. "Change in Medication Adherence and Beliefs in Medicines Over Time in Older Adults," Global Journal of Health Science, Canadian Center of Science and Education, vol. 8(5), pages 1-39, May.
    • Handle: RePEc:ibn:gjhsjl:v:8:y:2016:i:5:p:39
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    Cited by:

    1. Nakata, Cheryl & Sharp, Lisa K. & Spanjol, Jelena & Cui, Anna Shaojie & Izberk-Bilgin, Elif & Crawford, Stephanie Y. & Xiao, Yazhen, 2021. "Narrative arcs and shaping influences in long-term medication adherence," Social Science & Medicine, Elsevier, vol. 285(C).

    More about this item

    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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