Levels of 65,328 laboratory haemoglobin measurements in cardiac surgery patients divided on sex together with preoperative and lowest values of individual patients (obtained 2008 to 2015).

Table 2: Levels of 65,328 laboratory haemoglobin measurements in cardiac surgery patients divided on sex together with preoperative and lowest values of individual patients (obtained 2008 to 2015).

Hb Level mmol/L	All measurements		Individual patients
Hb Level mmol/L	Male	Female	Preoperative	Lowest
< 4.3	0.6%	0.3%	0.2%	6.6%
4.3-4.9	2.1%	1.6%	0.3%	13.6%
5.0-5.5	8.6%	6.8%	0.7%	18.0%
5.6-7.2	45.0%	47.5%	14.0%	41.6%
7.3-9.5	40.4%	40.5%	71.0%	19.3%
9.6-10.3	3.3%	3.3%	12.0%	0.9%
10.4+	0.6%	0.7%	1.8%