Table 3 Informative powers of SNP sets.

Calculated against all STs

Sensitivity = 0.91

Specificity = 0.98

PPV = 0.90

Safety net SNP atr351 "A" allele of as a diagnostic for CC17 – calculated against subsets of STs defined by generally applicable SNPs

CC67 profile STs

Sensitivity = 1

Specificity = 0.13

PPV = 0.07

CC23 profile STs

Sensitivity = 1

Specificity = 0.79

PPV = 0.14

CC17 profile STs

Sensitivity = 1

Specificity = 1

PPV = 1

Safety net SNP "A" allele as a diagnostic for CC17

Calculated against all STs

Sensitivity = 0.92

Specificity = 0.82

PPV = 0.45

Safety net SNP "A" allele as a diagnostic for CC17, CC67, CC22 eBURST group

Calculated against all STs

Sensitivity = 0.94

Specificity = 0.95

PPV = 0.85