Cited by 192Medication Adherence and ComplianceDementia and Cognitive Impairment ResearchPharmaceutical Practices and Patient Outcomes

Medication Adherence in Healthy Elders: Small Cognitive Changes Make a Big Difference

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Hayes, Tamara L., Larimer, Nicole, Adami, Andre, Kaye, Jeffrey A.·2009·Journal of Aging and Health

Abstract

Objective: This was a cross-sectional study of the ability of independently living healthy elders to follow a medication regimen. Participants were divided into a group with High Cognitive Function (HCF) or Low Cognitive Function (LCF) based on their scores on the ADAS-Cog. Method: Thirty-eight participants aged 65 or older and living independently in the community followed a twice-daily vitamin C regimen for 5 weeks. Adherence was measured using an electronic 7-day pillbox. Results: The LCF group had significantly poorer total adherence than the HCF group (LCF: 63.9 ± 11.2%, HCF: 86.8 ± 4.3%, t 36 = 2.57, p = .007), and there was a 4.1 relative risk of non-adherence in the LCF group as compared to the HCF group. Discussion: This study has important implications for the conduct of clinical drug trials, as it provides strong evidence that even very mild cognitive impairment in healthy elderly has a detrimental impact on medication adherence.

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  • Mild cognitive impairment in older adults is associated with poor medication adherence in most studies.

    “Also, mild cognitive impairment (MCI) in older adults has been found to be associated with poor medication adherence in most studies.11–13”

    From Effectiveness of eHealth interventions targeted to improve medication adherence among older adults with mild cognitive impairment: a protocol for a systematic review and meta-analysis (2022) · cites this paper as [11]

    The Discussion reports that poorer cognitive function distinguished older adults with poorer medication adherence. However, only three participants could qualify for mild cognitive impairment, and the results were unchanged when they were excluded. The paper also does not establish that an MCI–adherence association was found in most studies; its statement about “most studies” concerns the measures they used. (LLM, conf=0.88)

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Research works printed but not linked: 3

  1. Gorkin L Goldstein MG Follick MJ Lefrbvre RC Shumaker SA Schron EB Ockene JK 1990 Strategies for enhancing adherence in clinical trials Handbook of Health Behavior Change 361 375 New York Springer
  2. Insel K Morrow D Brewer B Figueredo A 2006 Executive function, working memory, and medication adherence among older adults J Gerontol B Psychol Sci Soc Sci 61 2 102 107 16497953
  3. Welsh K Breitner J Magruder-Habib K 1993 Detection of dementia in the elderly using telephone screening of cognitive status Neuroscience Letters (Neuropsychiatry, Neuropsychology and Behavioral Neurology) 103 110

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Authors
Hayes, T. L., Larimer, N., Adami, A., & Kaye, J. A.
Affiliations
  • Oregon Health & Science University (US)
  • Universidade de Caxias do Sul, Brazil
Corresponding author
Hayes, Tamara L.
Venue
Journal of Aging and Health
Published
2009-04-01
Volume
21
Issue
4
Pages
567-580
ISSN
  • 0898-2643 (ISSN-L)
  • 1552-6887
OpenAlex
W2161182511
Cited by
192
References
41
Citations by year
2026: 3 · 2025: 5 · 2024: 7 · 2023: 5 · 2022: 11 · 2021: 9 · 2020: 16 · 2019: 11 · 2018: 26 · 2017: 12 · 2016: 13 · 2015: 23 · 2014: 12 · 2013: 9 · 2012: 8
FWCI
7.31
Type
journal article
Language
en
Open access
Locations
  • Journal of Aging and Health (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Aging (R01AG024059, P30AG008017, P30AG024978, P30AG0801718)
Topics
  • Health Sciences › Medicine › Family Practice › Medication Adherence and Compliance
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Geriatrics and Gerontology › Pharmaceutical Practices and Patient Outcomes
Keywords
medication adherence, older adults, cognitive impairment, mild cognitive impairment, vitamin C supplementation, ADAS-Cog, healthy older adults, clinical drug trials, independent living
MeSH terms
Assessment of Medication Adherence, Activities of Daily Living, Aged, Aged, 80 and over, Ascorbic Acid, Cognition, Cognition Disorders, Cross-Sectional Studies, Female, Health Status, Humans, Male, Oregon, Psychiatric Status Rating Scales, Self Administration, Self Care, Geriatric Assessment, Drug Monitoring, Medication Adherence

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