Factors influencing secondary overtriage in trauma patients undergoing interhospital transfer: A 10-year multi-center study in Hong Kong

With the development of regionalised trauma networks, interhospital transfer of trauma patients is an inevitable component of the trauma system. However, unnecessary transfer is a common phenomenon, and it is not without risk and cost. A better understanding of secondary overtriage would enable emergency physicians to make better decisions about trauma transfers and allow guidelines to be developed to support this decision making. This study aimed to describe the pattern of secondary overtriage in Hong Kong and identify its associated factors. This was a retrospective review of 10-years of prospectively collected multi-center data from two trauma registries in the New Territories of Hong Kong (2013−2022). The primary outcome is secondary overtriage, which was defined as early discharge alive within 48 h, Injury Severity Score (ISS)