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Probabilistic mathematical modelling to predict the red cell phenotyped donor panel size

Author

Listed:
  • Denisse Best
  • Kevin Burrage
  • Pamela Burrage
  • Diane Donovan
  • Shamila Ginige
  • Tanya Powley
  • Bevan Thompson
  • James Daly

Abstract

In the last decade, Australia has experienced an overall decline in red cell demand, but there has been an increased need for phenotyped matched red cells. Lifeblood and mathematicians from Queensland universities have developed a probabilistic model to determine the percentage of the donor panel that would need extended antigen typing to meet this increasing demand, and an estimated timeline to achieve the optimum required phenotyped (genotyped) panel. Mathematical modelling, based on Multinomial distributions, was used to provide guidance on the percentage of typed donor panel needed, based on recent historical blood request data and the current donor panel size. Only antigen combinations determined to be uncommon, but not rare, were considered. Simulations were run to attain at least 95% success percentage. Modelling predicted a target of 38% of the donor panel, or 205,000 donors, would need to be genotyped to meet the current demand. If 5% of weekly returning donors were genotyped, this target would be reached within 12 years. For phenotyping, 35% or 188,000 donors would need to be phenotyped to meet Lifeblood’s demand. With the current level of testing, this would take eight years but could be performed within three years if testing was increased to 9% of weekly returning donors. An additional 26,140 returning donors need to be phenotyped annually to maintain this panel. This mathematical model will inform business decisions and assist Lifeblood in determining the level of investment required to meet the desired timeline to achieve the optimum donor panel size.

Suggested Citation

  • Denisse Best & Kevin Burrage & Pamela Burrage & Diane Donovan & Shamila Ginige & Tanya Powley & Bevan Thompson & James Daly, 2022. "Probabilistic mathematical modelling to predict the red cell phenotyped donor panel size," PLOS ONE, Public Library of Science, vol. 17(11), pages 1-15, November.
  • Handle: RePEc:plo:pone00:0276780
    DOI: 10.1371/journal.pone.0276780
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