Table 3.

Comparison of costs and savings between cohorts.

Cost item, £	Control period	Intervention period	Cost difference
Red blood cell units	70,410.01	53,146.61	17,263.40
Blood transfusion giving sets	4,505.19	3,400.59	1,104.60
Bioscientist time	3,028.07	2,635.11	392.96
Nursing time	4,057.91	3,062.97	994.94
Physician time	0.00	1,054.72	-1,054.72
Total	82,001.18	63,300.00	18,701.18