The comparison of modified early warning score with rapid emergency medicine score: a prospective multicentre observational cohort study on medical and surgical patients presenting to emergency department

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There are a few scoring systems in emergency departments (ED) to establish critically ill patients quickly and properly and to predict hospitalisation. We aim to compare the efficacy of Modified Early Warning Score (MEWS) and Rapid Emergency Medicine Score (REMS) on in-hospital mortality, and as predictor of hospitalisation in general medical and surgical patients admitted to ED.


This is a prospective, multicentre and observational cohort study. The study included general medical and surgical patients admitted to the EDs of three education and research hospitals during a period of 6 months. The primary outcome of the study is the admission of the patient to a ward/an intensive care unit (ICU)/high dependency unit (HDU) and in-hospital mortality. Receiver operating characteristics (ROC) curve analysis was performed to evaluate and compare the performances of two scores.


Total patients were 2000 (51.95% male, 48.05% female). The mean age was 61.41±18.92. Median MEWS and REMS values of the patients admitted to the ICU/HDU from ED were 1 and 6, respectively; and there was a significant difference in terms of REMS values, compared with patients discharged from ED. REMS (area under the curve (AUC): 0.642) was found to have a better predictive strength than MEWS (AUC: 0.568) in discriminating in-patients and discharged patients. Additionally, REMS (0.707) was superior to MEWS (AUC 0.630) in terms of predicting in-hospital mortality of patients presenting to ED.


The efficiency of REMS was found to be superior to MEWS as a predictor of in-hospital mortality and hospitalisation in medical and surgical patients admitted to ED.

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