• Emuella Flood, Susan McCutcheon, Kathleen Beusterien, deMauri S Mackie, Stella Mokiou, Xavier Guillaume, and Emily Mulvihill.
• Patient Centered Science, AstraZeneca, Gaithersburg, MD, USA.
• Patient Prefer Adher. 2024 Jan 1; 18: 151715301517-1530.

PurposePatients with early breast cancer (eBC) are increasingly provided with different options, which may involve a sequence of different treatments and treatment modalities, and eligibility for certain adjuvant treatments depending upon pre-surgical and surgical outcomes. This study examined patient preferences around aspects of treatment decision-making in eBC.Patients And MethodsA total of 452 patients with self-reported eBC in Germany (n=151), Italy (n=151), and Japan (n=150) completed an online survey about physician interactions and treatment side effects. The survey included best-worst scaling (BWS) to assess prioritization of 13 statements reflecting aspects of treatment decision-making. In a series of choice tasks, participants chose their most and least preferred options among subsets of 4 statements. Hierarchical Bayesian modeling was used to estimate BWS preference scores for each statement. BWS scores were based on the number of times a statement was chosen as most versus least preferred; scores total 100 for each patient.ResultsThe most preferred aspects of treatment decision-making were "treatment aggressiveness matches personal risk" (mean BWS score = 13.49), "being told about what is coming" (13.18), deciding based on "own surgical outcome" (11.90), "avoiding unnecessary treatment" (10.35), and "involving in treatment decisions" (9.44). The least preferred aspects were "not being asked about treatment decisions along the way" (3.27) and "receiving the same treatment as other patients" (3.41). Patients in Japan preferred "being told about what is coming", "deciding based on own surgical outcome", "avoiding unnecessary treatment", and being "involved in decisions" more than patients in Italy and Germany. Patients in Germany were more satisfied with their physician interactions and care, although their outcomes were not always better than those in Italy and Japan.ConclusionPatients value individualized treatment tailored to their risk of recurrence and tolerance of side effects, highlighting the need for focused patient education about options, to encourage their engagement.© 2024 Flood et al.

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