 The results of this study suggest that the number of consultations, the highest acuity level, need for an emergency operation or angiography, need for ICU admission, severity of emergency disease, and the number of diagnoses are all factors that can be used to predict the length of stay of transferred critically ill patients in the ED. These findings could help hospitals develop strategies to better manage their resources and improve patient outcomes. This article was authored by Hayan Bok Lee, Sanbrin Lee, and Hayan Yui Kim.