2025 Volume 81 Issue 4 Article ID: 24-00140
Emergency transport times are increasing year by year, the medical facility access function required of roads is extremely important from the viewpoint of guaranteeing the national minimum. However, the current transport appraisal in Japan is based on the evaluation of three benefits, and no standardized appraisal method for medical access has been presented. Although several cases of measurement have been reported in business and research, most of them are based on the Cara curve, which was developed in France and shows the approximate relationship between elapsed time and risk of death. Therefore, this study estimated the relationship between emergency transport time and lifesaving rate by region and symptom using individual data on EMS transport in Japan (Emergency transport personnel data and Utstein data) and estimated the benefit of improving the lifesaving rate by road development. Based on the estimation results, the significance of benefit measurement was summarized from the viewpoint of ensuring the national minimum, and a policy for handling the measurement in transport appraisal was presented.
