ED	Emergency department
ICU	Intensive care unit
RASS	Richmond Agitation-Sedation Scale
GCS	Glasgow Coma Scale
ROC	Receiver operating characteristic
AUC	Area under the curve
LR	Likelihood ratio
OR	Odds ratio
CI	Confidence interval
PPV	Positive predictive value
NPV	Negative predictive value
NEWS2	National Early Warning Score 2