Patient Preferences for Metastatic Hormone-Sensitive Prostate Cancer Treatments: A Discrete Choice Experiment Among Men in Three European Countries.

Various treatment options are available for metastatic hormone-sensitive prostate cancer. This study aimed to quantify how men with prostate cancer in the United Kingdom (UK), Germany, and Spain perceive the risks and benefits of hypothetical abiraterone acetate plus prednisone treatment and docetaxel-based chemotherapy treatment options.

A targeted literature review, exploratory interviews with prostate cancer patients and oncologists, and pre-test interviews were used to develop a discrete choice experiments (DCE). The final DCE included 32 choice sets, selected using a main-effects orthogonal design, divided into two survey blocks. Paired profiles presented hypothetical treatments for prostate cancer through six attributes that could be presented at two or four levels each. Preference estimates were estimated using a conditional logit regression model. Preference results were stratified by cancer stage.

A total of 152 participants (mean age 69 years) completed the DCE in the UK, Germany, and Spain. Treatment effectiveness was the main concern for the patients (difference in preference estimates between 8 and 32 months 1.443). Participants wanted to avoid pain that was not well controlled (preference dummy coding estimate - 1.157). Participants valued a change from an oral medication to an intravenous treatment (change in preference estimate - 0.416) more negatively than a change from a 1% to a 5% risk of infection (change in preference estimate - 0.313).

This study shows that treatment effectiveness and pain control were the most important attributes for patients with prostate cancer. These two attributes influenced more than 50% of their decision-making in this study. The risk of fatigue and mode of administration were least prioritised by patients. This study highlights the relative importance that Spanish, German, and British patients place on various aspects of treatment options for prostate cancer. Understanding patient preference and taking them into consideration shall help physicians when developing their treatment strategies for their patients.

Janssen.

Advances in therapy. 2019 Jan 07 [Epub ahead of print]

Hayley M de Freitas, Tetsuro Ito, Monica Hadi, Gemma Al-Jassar, Mickaël Henry-Szatkowski, Beenish Nafees, Andrew J Lloyd

Patient Centered Outcomes, Mapi, An Icon plc Company, London, UK., Health Economics and Market Access EMEA, Janssen, High Wycombe, UK. ., Patient Centered Outcomes, Mapi, An Icon plc Company, Lyon, France., Nafees Consulting Ltd, London, UK., Acaster Lloyd Consulting Ltd, London, UK.

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