Table 2 Cohort characteristics. All data are based on a time zero set to the time when the patient was first placed in a hospital unit that was not the emergency department (which we refer to as hospital entry time, or HET; see citation 20 for details). This is a longitudinal score based on 12 months of patient data; the higher the score, the greater the mortality risk due to comorbid illness.
This is a score measuring acute physiologic instability based on the 72 h preceding HET. The outcomes tended to occur early, with 25 occurring within 12 h of hospital admission and 50 of them occurring by 36 h.