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. Author manuscript; available in PMC: 2013 May 1.
Published in final edited form as: Transfusion. 2011 Nov 1;52(5):1106–1111. doi: 10.1111/j.1537-2995.2011.03396.x

Table 2.

Genotype frequencies of SLC44A2 expressing HNA-3 variants in African Americans and Caucasians

African American
 Caucasian
SLC44A2 genotype Predicted HNA-3
expression		 Donors
(n)		 Population frequency
 Donors
(n)		 Population frequency
Mean 95% CI * Mean 95% CI *
SLC44A2*1, SLC44A2*1 aa 209 86.7% 75% – 99% 64 68.8% 53% – 88%
SLC44A2*1, SLC44A2*2 ab 31 12.9% 9% – 18% 27 29.0% 19% – 42%
SLC44A2*2, SLC44A2*2 bb 1 0.4% 0.01% – 2% 2 2.2% 0.3% – 8%
Total 241 93
*

95% confidence interval calculated by Poisson distribution