The research area of out-of-hospital care focuses on providing medical treatment and care to patients outside of traditional healthcare settings, such as hospitals or clinics. This includes services like emergency medical services (EMS), home health care, telemedicine, and mobile healthcare units. Research in this area aims to improve the quality, efficiency, and accessibility of care provided outside of hospitals, with the goal of improving patient outcomes and reducing healthcare costs. Studies in this field may focus on areas such as emergency response times, the effectiveness of telemedicine interventions, patient satisfaction with home health care services, and the impact of mobile healthcare units on underserved populations.