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. 2011 Jul 13;8:56. doi: 10.1186/1742-4690-8-56

Table 3.

Genotypic prediction of HIV-1 tropism by a subtype D specific algorithm compared to the observed phenotype

TTT Concordance Genotypic Prediction
Genotypic tool R5 R5X4/X4 Sena Speb
Combined 11/25 and net charge rules for subtype D R5 21 1 92% 75% 95%
X4 1 3 κ = 0.70 (p < 0.001)

aSen: sensitivity for predicting CXCR4-using viruses

bSpe: specificity for predicting CXCR4-using viruses

κ: kappa coefficient.