Each patient's Manchester Triage category, NEWS at presentation, nurse and treating clinician impressions and a novel score calculated from NEWS data will be collected together with the outcome data in order to compare the predictive power of the five scoring systems. In this way the study will test which is the best scoring system for identifying high risk patients in a timely manner. This is important as it can allow life saving treatment to be delivered quickly to those patients who need it most and can prevent inappropriate interventions on patients who do not immediately need them. The study will collect minimal patient information and will not interfere with or alter their treatment in any way. Only patient data recorded as part of routine practice is required, which will be collected by members of the direct care team and will be anonymised prior to analysis.