1. Department of Clinical Epidemiology and Health Economics , School of Public Health, , Tokyo 113-0033 , Japan
2. The University of Tokyo , School of Public Health, , Tokyo 113-0033 , Japan
3. Emergency Life-Saving Technique Academy of Tokyo, Foundation for Ambulance Service Development , Tokyo 192-0364 , Japan
4. Emergency and Critical Care Center, Tokyo Metropolitan Hiroo Hospital , Tokyo 150-0013 , Japan
5. Department of Emergency Medicine, Kyoto Prefectural University of Medicine , Kyoto 602-8566 , Japan
6. Tertiary Emergency Medical Center, Tokyo Metropolitan Bokutoh Hospital , Tokyo 130-8575 , Japan
7. Data Science Center, Jichi Medical University , Tochigi 329-0431 , Japan
8. Department of Read World Evidence, Graduate School of Medicine, The University of Tokyo , Tokyo 113-0033 , Japan