Patient preferences for important attributes of bipolar depression treatments: a discrete choice experiment
Authors Ng-Mak D, Poon JL, Roberts L, Kleinman L, Revicki DA, Rajagopalan K
Received 13 September 2017
Accepted for publication 11 December 2017
Published 28 December 2017 Volume 2018:12 Pages 35—44
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Amy Norman
Peer reviewer comments 3
Editor who approved publication: Dr Johnny Chen
Daisy Ng-Mak,1 Jiat-Ling Poon,2 Laurie Roberts,2 Leah Kleinman,2 Dennis A Revicki,2 Krithika Rajagopalan1
1Global Health Economics and Outcomes Research, Sunovion Pharmaceuticals Inc., Marlborough, MA, 2Patient-Centered Research, Evidera, Bethesda, MD, USA
Purpose: The purpose of this study was to assess patient preferences regarding pharmacological treatment attributes for bipolar depression using a discrete choice experiment (DCE).
Methods: Adult members of an Internet survey panel with a self-reported diagnosis of bipolar depression were invited via e-mail to participate in a web-based DCE survey. Participants were asked to choose between hypothetical medication alternatives defined by attributes and levels that were varied systematically. The six treatment attributes included in the DCE were time to improvement, risk of becoming manic, weight gain, risk of sedation, increased blood sugar, and increased cholesterol. Attributes were supported by literature review, expert input, and results of focus groups with patients. Sawtooth CBC System for Choice-Based Conjoint Analysis was used to estimate the part-worth utilities for the DCE analyses.
Results: The analytical sample included 185 participants (50.8% females) from a total of 200 participants. The DCE analyses found weight gain to be the most important treatment attribute (relative importance =49.6%), followed by risk of sedation (20.2%), risk of mania (13.0%), increased blood sugar (8.3%), increased cholesterol (5.2%), and time to improvement (3.7%).
Conclusion: Results from this DCE suggest that adults with bipolar depression considered risks of weight gain and sedation associated with pharmacotherapy as the most important attributes for the treatment of bipolar depression. Incorporating patient preferences in the treatment decision-making process may potentially have an impact on treatment adherence and satisfaction and, ultimately, patient outcomes.
Keywords: bipolar depression, treatment preference, adverse events, weight gain
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