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. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: Pharmacogenomics J. 2013 Sep 10;14(3):223–228. doi: 10.1038/tpj.2013.34

Table 4.

Calculation of patients needed to be genotyped.

Algorithm Individuals outside 20% range
Novel African American 53
IWPC Clinical 95
Absolute risk reduction: (53/129) – (95/129) 0.325
Number needed to genotype: 1/0.325 3.07