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Table 2 Comparison of allele vectors in spaces Y and Z.

From: A geometric and algebraic view of MHC-peptide complexes and their binding properties

HLA Numerical Categorical   
allele R2 (%) Sensitivity (%) Specificity (%) Likelihood Ratio
A1 27.1 50 97 15
A2 71.9 67 100  
A3 63.7 50 98 22
A11 40.5 50 97 18
A24 25.8 100 97 36
A29 12.7 67 95 13
A31 26.8 100 97 30
A33 16.0 100 96 25
B7 36.6 60 94 10
B8 14.4 50 95 10
B14 22.9 50 94 9
B27 71.8 100 99 86
B35 36.9 100 97 30
B38 0.2 0 93  
B44 18.3 25 96 6
B51 48.6 100 98 45
B53 22.4 67 97 20
B54 40.9 67 98 30
ALL 27.7 64 96 18
  1. 'R2' stands for the coefficient of determination in the regression analysis of numerical values of the vectors in spaces Y and Z (see text) for each allele. (In all cases the p value was 0.000, except for B38, which was 0.51.) Allele vectors values in Y and Z were converted to categorical values (0, 1) using cut-off values and pairs of vectors for each allele were compared using a 2 × 2 contingency table. 'Sensitivity', 'specificity', and 'likelihood ratio' refer to the prediction of a Z vector by the corresponding Y vector, and were calculated from these 2 × 2 tables.