“…A 12 part acute physiology score which included the patient's age, cardiac and respiratory history, blood pressure, pulse rate, Glasgow Coma Score, haemoglobin, leucocyte count, serum electrolytes and urea, and details of the most recent electrocardiogram were obtained preoperatively. A six part operative severity score was obtained immediately after surgery including operative severity, number of procedures, total blood loss, the presence of peritoneal soiling, the presence and extent of malignancy, and the timing of surgery [1,12–16]. These data were entered by the operating surgeon on a standardized proforma and collected centrally by a data clerk.…”