Retrospective Study to Reduce Blood Transfusion Waste in Remote Island Healthcare Settings

Table 3

The comparison of quantities and rates of disposal between two periods before and after the intervention.

Periods	2013∼2017 preintervention	2018∼2022 postintervention	value
Unit purchased	858 (734, 921)	670 (627, 754)	0.047
Amount disposed (×100 USD)	136.74 (95.89, 144.34)	78.50 (69.94, 85.23)	0.016
Disposal rate (%)	24.9 (18.9, 27.2)	16.5 (15.2, 21.4)	0.047
Costs paid for transfused blood discarded (USD)	3674.30 (9589.40, 14434.00)	7850.00 (6993.75, 8522.75)	0.016

Comparing the results of ABO-incompatible transfusions before and after the intervention, the amount of purchased blood transfusions, the purchase cost of discarded blood transfusions, and the waste rate were all significantly reduced. All data are expressed in the median (25% tile, 75% tile). Mann–Whitney’s U-test was used for the nonparametric test of the null hypothesis.