Cited by 86Medication Adherence and CompliancePersonality Traits and PsychologyPharmaceutical Practices and Patient Outcomes

Personality and medication non‐adherence among older adults enrolled in a six‐year trial

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Jerant, Anthony, Chapman, Benjamin, Duberstein, Paul, Robbins, John, Franks, Peter·2011·British Journal of Health Psychology

Abstract

Objectives. Personality factors parsimoniously capture the variation in dispositional characteristics that affect behaviours, but their value in predicting medication non‐adherence is unclear. We investigated the relationship between five‐factor model personality factors (Conscientiousness, Neuroticism, Agreeableness, Extraversion, and Openness) and medication non‐adherence among older participants during a six‐year randomized placebo‐controlled trial (RCT). Design. Observational cohort data from 771 subjects aged ≥72 years enrolled in the Ginkgo Evaluation of Memory study, a RCT of Ginkgo biloba for prevention of dementia. Methods. Random effects logistic regression analyses examined effects of NEO Five‐Factor Inventory scores on medication non‐adherence, determined via pill counts every 6 months (median follow‐up 6.1 years) and defined as taking <80% of prescribed pills. Analyses adjusted for covariates linked with non‐adherence in prior studies. Results. Each 5 year increment in participant age was associated with a 6.7% greater probability of non‐adherence (95% confidence interval, CI [2.4, 11.0]). Neuroticism was the only personality factor associated with non‐adherence: a 1 SD increase was associated with a 3.8% increase in the probability of non‐adherence (95% CI [0.4, 7.2]). Lower cognitive function was also associated with non‐adherence: a 1 SD decrease in mental status exam score was associated with a 3.0% increase in the probability of non‐adherence (95% CI [0.2, 5.9]). Conclusions. Neuroticism was associated with medication non‐adherence over 6 years of follow‐up in a large sample of older RCT participants. Personality measurement in clinical and research settings might help to identify and guide interventions for older adults at risk for medication non‐adherence.

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Authors
Jerant, A., Chapman, B., Duberstein, P., Robbins, J., & Franks, P.
Affiliations
  • University of California Davis Medical Center (US)
  • University of Rochester Medicine (US)
  • University of California, Davis (US)
Corresponding author
Jerant, Anthony
Venue
British Journal of Health Psychology
Publisher
Wiley
Published
2011-01-12
Volume
16
Issue
1
Pages
151-169
ISSN
  • 1359-107X (ISSN-L)
  • 2044-8287
OpenAlex
W1927249329
Cited by
86
References
53
Citations by year
2026: 3 · 2025: 5 · 2024: 1 · 2023: 4 · 2022: 7 · 2021: 7 · 2020: 7 · 2019: 3 · 2018: 5 · 2017: 4 · 2016: 5 · 2015: 9 · 2014: 5 · 2013: 7 · 2012: 12
FWCI
6.02
Type
journal article
Language
en
Open access
Locations
  • British Journal of Health Psychology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (P50AG005133)
  • National Institute of Mental Health (K24MH072712, T32MH073452)
  • National Institute of Allergy and Infectious Diseases (U01AI000162)
  • National Center for Complementary and Integrative Health (U01AT000162)
Topics
  • Health Sciences › Medicine › Family Practice › Medication Adherence and Compliance
  • Social Sciences › Psychology › Clinical Psychology › Personality Traits and Psychology
  • Health Sciences › Medicine › Geriatrics and Gerontology › Pharmaceutical Practices and Patient Outcomes
Keywords
medication non-adherence, personality, Big Five personality traits, neuroticism, conscientiousness, agreeableness, extraversion, openness to experience, older adults, cognitive function, Ginkgo biloba, dementia prevention, pill count
MeSH terms
Age Factors, Aged, Aged, 80 and over, Aging, Dementia, Female, Follow-Up Studies, Humans, Male, Phytotherapy, Memory, Neurotic Disorders, Personality, Personality Inventory, United States, Cohort Studies, Geriatric Assessment, Drug Monitoring, Ginkgo biloba, Medication Adherence

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