A Discrete-Choice Experiment Assessing the Patient Preferences and Real-World Experiences of Patients with Migraine in Japan.

INTRODUCTION

Migraine is a debilitating headache disorder with a high prevalence in Japan that imposes significant societal burden. Although the Japanese Clinical Practice Guideline for Headache Disorders 2021 recommends both acute and preventive migraine treatments, the usage of preventive treatments is still limited. Therefore, it is crucial to understand the treatment preferences of patients with migraine pertaining to both acute and preventive treatments.

METHODS

A mixed-methods study including a discrete choice experiment (DCE) was conducted with Japanese patients with migraine (10 for the qualitative interviews, and 400 for the DCE) who were recruited from the Rakuten Insight panel. The DCE presented hypothetical treatment options including oral acute, oral preventive, and injectable preventive medications. Six attributes (method of delivery, reduction of pain, impact of headaches on daily routines, dosage adjustability, and temporary and persistent side effects) each with three levels were included in the survey. A hierarchical Bayesian model was used to estimate relative attribute importance scores (RAI) for all attributes.

RESULTS

For the 400 participants in the DCE, the most common age bracket was 40-49 years old, and the majority were female (66.75%). RAI estimates indicated that "method of delivery" was the most important attribute for patients (RAI 51.92, SD = 10.20), followed by "reduction of pain when experiencing a headache" (RAI 17.00, SD = 7.74). Oral preventive treatments were preferred over injectable preventive treatments. The qualitative interviews showed that patients prefer oral medications to injectable treatments, and a lack of awareness regarding preventive treatments.

CONCLUSION

This study found that the "method of delivery" was the most important driver of treatment preferences of patients with migraine in Japan, with oral acute medications being preferred. Oral preventive treatments were found to be preferred over injectable treatments. These results may indicate the need for increased education regarding preventive treatments, as well as the need for further development of these treatments.