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Clinical decision rule to identify high-risk trauma patients (mortality or length of stay >2 days) meeting ACSCOT step 1 criteria (validation set, n = 2,504) (event and nonevent numbers/proportions correspond to each end-node of the tree). *ACS = American College of Surgeons Committee on Trauma. Event = mortality (either field based after resuscitative efforts or in-hospital) or hospital length of stay greater than 2 days. Nonevent = survival with hospital length of stay 0 to 2 days.
