Figure 3From: The epidemiology of severe sepsis in England, Wales and Northern Ireland, 1996 to 2004: secondary analysis of a high quality clinical database, the ICNARC Case Mix Programme DatabaseChanges in outcomes for admissions with severe sepsis during the first 24 hours following admission to critical care, 1996 to 2004. *Surgical status: L, elective; M, emergency; N, non-surgical. CI, confidence interval; HDU, high dependency unit; ICU, intensive care unit.Back to article page