A discrete choice experiment to explore patients’ willingness to risk disease relapse from treatment withdrawal in psoriatic arthritis

Claire Rothery*, Laura Bojke, Gerald Anthony Richardson, Chris Bojke, Anna Moverley, Laura Coates, Liz Thorp, Robin Waxman, Philip Helliwell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The objective of this study is to assess patient preferences for treatment-related benefits and risk of disease relapse in the management of low disease states of psoriatic arthritis (PsA). Focus groups with patients and a literature review were undertaken to determine the characteristics of treatment and symptoms of PsA important to patients. Patient preferences were assessed using a discrete choice experiment which compared hypothetical treatment profiles of the risk and benefits of treatment withdrawal. The risk outcome included increased risk of disease relapse, while benefit outcomes included reduced sickness/nausea from medication and changes in health-related quality of life. Each patient completed 12 choice sets comparing treatment profiles. Preference weights were estimated using a logic regression model, and the maximum acceptable risk in disease relapse for a given improvement in benefit outcomes was elicited. Final sample included 136 patients. Respondents attached the greatest importance to eliminating severe side effects of sickness/nausea and the least importance to a change in risk of relapse. Respondents were willing to accept an increase in the risk of relapse of 32.6 % in order to eliminate the side effects of sickness/nausea. For improvements in health status, the maximum acceptable risk in relapse was comparable to a movement from some to no sickness/nausea. The study suggests that patients in low disease states of PsA are willing to accept greater risks of relapse for improvements in side effects of sickness/nausea and overall health status, with the most important benefit attribute being the elimination of severe sickness or nausea.

Original languageEnglish
Pages (from-to)2967-2974
Number of pages8
JournalClinical rheumatology
Issue number12
Early online date31 Oct 2016
Publication statusPublished - Dec 2016

Bibliographical note

© 2016, The Author(s).


  • Discrete choice experiment
  • Patient preferences
  • Psoriatic arthritis
  • Relapse risk
  • Recurrence
  • Choice Behavior
  • Humans
  • Middle Aged
  • Focus Groups
  • Male
  • Risk
  • Treatment Outcome
  • Patient Preference
  • Withholding Treatment
  • Regression Analysis
  • Rheumatology/methods
  • Quality of Life
  • Adult
  • Arthritis, Psoriatic/psychology
  • Female

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