Table 2.

Mean haemoglobin levels, amount of blood salvaged per patient and expected intraoperative blood loss

	Mean	Standard deviation	Range
Preoperative haemoglobin	11.8g/dl	2.0g/dl	8.1–15.0g/dl
Postoperative haemoglobin	9.9g/dl	1.3g/dl	7–13g/dl
Intraoperative blood loss	1,232.5ml	815.5ml	150–2,693ml
Blood salvaged intraoperatively	388ml	270ml	101–1,231ml