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International Journal of Clinical Pharmacy

, Volume 40, Issue 5, pp 1234–1241 | Cite as

Unintentional and intentional non-adherence to immunosuppressive medications in renal transplant recipients

  • Konstadina GrivaEmail author
  • Hui Ling Michelle Neo
  • Anantharaman Vathsala
Research Article
  • 159 Downloads

Abstract

Background Non-adherence to immunosuppressive medications following renal transplantation is a risk factor for rejection and graft loss. Despite the dire consequences, adherence lapses, both unintentional and intentional, are common and poorly understood. Objective The present study sets to compare the rates and determinants of unintentional, intentional and overall self-reported non-adherence. Setting Outpatient clinic at the National University Centre for Organ Transplantation, Singapore. Method This was a cross-sectional survey administered to N = 152 renal transplant recipients. Main outcome measure They completed the Transplant Effects Questionnaire, Beliefs about Medications Questionnaire, Multidimensional Scale of Perceived Social Support, the Depression, Anxiety and Stress Scale, and the Medication Adherence Report Scale. Clinical and laboratory information were also assessed. Results The prevalence rates for overall, unintentional, and intentional self-reported non-adherence were 19.7, 47.4, and 15.1% respectively. Unintentional non-adherence was predicted by engagement in formal work, a primary diagnosis of autoimmune nephritis, and being a recipient of a living-donor renal transplant (i.e. stable characteristics). In contrast, intentional non-adherence was predicted by co-morbid burden and patients’ evaluation of the side effects of their medications. Overall non-adherence was predicted by a deliberate decision-making process involving the weighing of the costs of using immunosuppressive drugs against their perceived benefits. Conclusion The survey highlighted the importance of making a distinction between unintentional and intentional non-adherence in renal transplant recipients, and suggested that modifiable factors may be targeted in different ways in interventions to increase adherence.

Keywords

Immunosuppressive medications Intentional Non-adherence Renal transplant Self-reported Singapore Unintentional 

Notes

Acknowledgements

The authors appreciate the assistance of Ms. Vanessa Lee and Ms. Priscilla Loh in data collection, and Ms. Tanusya Murali and Ms. Amy Lim for administrative support.

Funding

No funding was received for this study.

Conflicts of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Konstadina Griva
    • 1
    Email author
  • Hui Ling Michelle Neo
    • 2
  • Anantharaman Vathsala
    • 3
  1. 1.Centre for Population Health Sciences (CePHaS), Lee Kong Chian School of MedicineImperial College & Nanyang Technological UniversitySingaporeSingapore
  2. 2.Department of Psychological MedicineNational University Health SystemSingaporeSingapore
  3. 3.National University Centre for Organ TransplantationNational University Health SystemSingaporeSingapore

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