Assessing theoretical predictors of long-term medication adherence: Patients' treatment-related beliefs, experiential feedback and habit development

L. Alison Phillips, Howard Leventhal, Elaine A. Leventhal

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

Patient non-adherence to medication is a pervasive problem that contributes to poor patient health and high healthcare costs. Basic research and interventions have focused thus far on behaviour initiation factors, such as patients' illness and treatment beliefs. This paper proposes two processes that occur after behaviour initiation that are theorised to contribute to prediction of long-term medication adherence: 'coherence' of patients' beliefs from experiences with treatment and habit development. Seventy-one hypertensive patients reported their treatment-related beliefs, experiences related to treatment efficacy and medication-taking habit strength in a baseline interview. Patients then used an electronic monitoring pill bottle for approximately one month. Patients' medication habit-strength was the strongest predictor of all adherence measures, explaining 6-27% incremental variance in adherence to that explained by patients' treatment-related beliefs. Patients' beliefs and experiences did not predict overall adherence, even for patients with 'weaker' habits. However, patients' experiences were found to predict intentional non-adherence and habit strength was found to predict unintentional adherence. Practitioners may assess patients' medication-taking habits to get an initial view of their likely adherence to long-term medications. Future research should assess the current theoretical predictions in a hypertension inception sample and in populations with symptomatic conditions.

Original languageEnglish (US)
Pages (from-to)1135-1151
Number of pages17
JournalPsychology and Health
Volume28
Issue number10
DOIs
StatePublished - Oct 2013

All Science Journal Classification (ASJC) codes

  • Applied Psychology
  • Public Health, Environmental and Occupational Health

Keywords

  • behaviour maintenance
  • commonsense self-regulation model
  • habit development
  • habit strength
  • health beliefs
  • medication adherence

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