Massive Transfusion Protocol Activation Does Not Result in Preferential Use of Older Red Blood Cells

Table 2

Distribution of ABO type blood products from the regional donor population compared to ER and nER cohort RBCs. Data is presented as number (% of total).

	Donors	ER	nER
O	313276 (44.1%)	49 (37.4%)	79 (44.9%)
A	277461 (39.1%)	61 (46.6%)	71 (40.3%)
B	86009 (12.1%)	18 (13.7%)	23 (13.1%)
AB	33148 (4.7%)	0 (0.0%)	3 (1.7%)
Unknown*	0 (0.0%)	3 (2.3%)	0 (0%)
Total	709,894 (100.0%)	131 (100.0%)	176 (100.0%)

The blood type of 3 patients in the ER cohort was unable to be obtained in the available dataset.