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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: Transfusion. 2020 Mar;60(Suppl 2):S17–S37. doi: 10.1111/trf.15715

TABLE 22.

Percent of Group O (positive and negative) RBC distributed, transfused, and outdated (as a percentage of all allogeneic RBC), 2015 and 2017

2017 percent (SD, n) 2015 percent (SD, n)
Group O− Group O+ Group O− Group O+
Units processed 8.2 (5.5, n = 97) 32.4 (19.5, n = 98)
Units distributed 11.0 (5.5, n = 62) 39.8 (13.9, n = 61)
Units outdated (Blood center) 5.3 (9.1, n = 62) 12.5 (15.3, n = 63)
Units transfused 11.2 (7.3, n = 1498) 40.2 (13.6, n = 1480) 10.8 (7.3, n = 939) 40.2 (12.7, n = 933)
Units outdated (Hospital) 12.5 (19.6, n = 1055) 16.4 (22.1, n = 1053) 11.5 (19.3, n = 670) 16.9 (22.7, n = 663)

SD = standard deviation.