Publications by authors named "K Yamato"

Objective: This study aimed to investigate seasonal differences in migraine onset in Japan and associated trends in the prescription of triptan.

Background: The relationship between seasonal changes and the onset of migraine remains largely unknown.

Methods: We combined the large-scale medical claims data in Japan with city-level meteorological data presented by the Japan Weather Association.

View Article and Find Full Text PDF
Article Synopsis
  • - This study focuses on modifying cellulose nanomaterials (CNs) to make them more hydrophobic and thermally stable, which is important for creating strong and transparent epoxy nanocomposites.
  • - Researchers explored amidation, a chemical process that alters carboxy groups on fibrous wood pulp, achieving high amidation rates of 88% and 91% and improving efficiency for industrial use.
  • - After amidation, the thermal degradation point of the wood pulp increased significantly from 224°C to over 250°C, and the modified pulp was processed into transparent dispersions for further applications.
View Article and Find Full Text PDF

Background And Objectives: Fremanezumab is an effective treatment for episodic (EM) and chronic migraine (CM) patients in Japan, but its cost effectiveness remains unknown. The objective of this study was to determine the cost effectiveness of fremanezumab compared with standard of care (SOC) in previously treated EM and CM patients from a Japanese healthcare perspective.

Methods: Estimated regression models were implemented in a probabilistic Markov model to inform effectiveness and health-related quality-of-life data for fremanezumab and SOC.

View Article and Find Full Text PDF
Article Synopsis
  • A study aimed to identify what motivates individuals to receive COVID-19 booster vaccines through a paper-based questionnaire at Keio University, involving 1725 participants who had received their initial vaccinations in 2021.
  • The main motivators for getting vaccinated included fear of severe illness from COVID-19 (72.6%), concern about infecting others (68.4%), and fear of infection itself (68.3%).
  • Television was found to be the most influential source of vaccination information, while trust in vaccine efficacy and safety was linked to participants' willingness to get booster shots, regardless of reported adverse events experienced.
View Article and Find Full Text PDF

Purpose: The study aimed to validate and compare coding algorithms for identifying people with migraine within the Japanese claims database.

Methods: This study used the administrative claim database provided by DeSC Healthcare, Inc., that was linked to the results of an online survey administered to adult users of the health app "kencom.

View Article and Find Full Text PDF