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Patient survey to identify reasons for non-adherence and elicitation of quality of life concepts associated with immunosuppressant therapy in kidney transplant recipients

Authors Muduma G, Shupo FC, Dam S, Hawken NA, Aballéa S, Odeyemi I, Toumi M

Received 10 September 2015

Accepted for publication 3 November 2015

Published 12 January 2016 Volume 2016:10 Pages 27—36

DOI https://doi.org/10.2147/PPA.S96086

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Haiyan Qu

Peer reviewer comments 3

Editor who approved publication: Dr Johnny Chen

Gorden Muduma,1 Francis C Shupo,2 Sophie Dam,3 Natalia A Hawken,3 Samuel Aballéa,3 Isaac Odeyemi,1 Mondher Toumi4

1Astellas Pharma Europe Ltd, Chertsey, 2Creativ-Ceutical Ltd, London, UK; 3Creativ-Ceutical Ltd, Paris, 4Public Health (EA 3279), Faculty of Medicine, Aix-Marseille University, Marseille, France

Background: Renal transplantation (RT) is considered the treatment of choice for end-stage renal disease compared to dialysis, offering better health-related quality of life (HRQoL) and higher survival rates. However, immunosuppressants are essential for the long-term survival of kidney grafts and patients’ non-adherence to their medication leads to poor outcomes. Immunosuppressants can also significantly alter patients’ HRQoL because of their side effects and the complex chronic medication regimen they represent.
Purpose: To elicit key concepts related to adherence to immunosuppressant therapy (IT) and reasons for non-adherence in terms of patient reported outcomes, side effects, and the impact of the medication on HRQoL in RT population, including patient preference of once daily over twice-daily immunosuppressive regimen. Results were used to develop an IT-specific conceptual framework and provide suggestions for improving patients’ adherence to IT.
Materials and methods: Interviews were conducted with three clinical experts to determine key concepts related to RT and immunosuppressants. Thirty-seven participants in four focus groups were asked to cite important concepts related to adherence and impact of IT on HRQoL and to rate them. Qualitative analysis was conducted to code participants’ responses.
Results:
Non-adherence among participants where admitted was unintentional. The reason for this included forgetfulness, interference with lifestyle, being asleep at the time the medication should be taken, change in routine, and impact of side effects. Overall, participants reported that the evening dose was more problematic to remember and that the exclusion of this dose could make them more adherent. Participants also reported that IT impacted on their HRQoL in a number of ways including: placing restrictions on their lifestyle, causing anxiety, or impairing their ability to work.
Conclusion: This study provides qualitative evidence about the barriers to IT adherence and the components of HRQoL that are important from the perspective of RT patients. The developed conceptual framework of IT-HRQoL in RT transplants, including social, psychological, and work life domains, can be used to inform the development of a new IT-specific measure of HRQoL in RT patients for use in head-to-head clinical trials or observational studies. Despite limitations associated with the number and the age range of patients recruited, this study suggests that a change in the regimen from twice-daily to once daily among other measures could improve their adherence to IT and their HRQoL by placing less restrictions on their lifestyles.

Keywords: adherence, PRO, conceptual framework, immunosuppressant, renal transplantation, QoL

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