Generative AI Reduces Rehabilitation Summary Creation Time by ~57%; Soseikai General Hospital's Medical DX Research Published in Cureus

The Department of Rehabilitation at Soseikai General Hospital (Headquarters: Fushimi-ku, Kyoto; Board Chairman: Eimei Tsuda) has verified the operational improvement effects of the "Ubie Generative AI" introduced in 2025, and the research results have been published in the international medical journal Cureus.

In rehabilitation summary creation, the median time was reduced from 23 minutes to 10 minutes, representing a reduction of approximately 57%. Based on approximately 300 reports generated annually, this equates to a reduction of approximately 3,900 minutes (65 hours) in labor time per year.

Background and Objectives: Reducing and Standardizing Documentation Burden The hospital generates approximately 300 rehabilitation summaries annually. Previously, individual therapists handled this task, leading to challenges such as time burden, inconsistency in content, and psychological strain from urgent requests. While the hospital had previously attempted semi-automation using Excel macros, it introduced a new workflow using Ubie Generative AI in 2025 to further improve efficiency and standardization.

Detailed Verification Results: Documented Effects The study compared data from 16 summaries before implementation and 22 after.

- Reduction in Creation Time (Approx. 57%): The median time decreased from 23 minutes to 10 minutes (a 13-minute reduction). This improvement remained statistically significant even when analyzed with a linear mixed-effects model accounting for therapist-specific variations. - High Usability: The system achieved high scores on the System Usability Scale (SUS), suggesting that staff find Generative AI-assisted documentation acceptable and easy to integrate into clinical practice. - Reduced Psychological Burden: Staff reported feeling less stressed by urgent requests and noted that the documentation burden felt lighter, with improved content readability. This suggests benefits beyond mere time savings.

Comment from Staff "The greatest achievement from introducing Generative AI is not just 'time saved.' By streamlining the burdensome task of rehabilitation summary creation, staff now have more time to spend with patients and communicate with colleagues. Staff also reported lower stress during urgent requests and clearer content organization.

However, as these are medical documents, we ensure that therapists always review and edit AI-generated drafts. Generative AI does not replace clinical judgment; it is a tool to support frontline operations. We will continue to leverage AI and digital transformation to provide higher-quality rehabilitation services."

Future Outlook: Accelerating AI and DX in Rehabilitation Building on these results, Soseikai General Hospital's Rehabilitation Department is further accelerating its AI and DX initiatives. Current efforts include trials for voice-to-text clinical documentation assistance and the development of a proprietary evaluation app optimized for the department. The hospital remains committed to using digital technology to simultaneously reduce workloads and enhance the quality of medical care.