Table 4: Vector Method/ Nearest Neighbour Run

Syndrome Name No of Cases Sensitivity Specificity Predictive Value
FAS 3597 99.9 99.5 99.7
Trisomy 21 702 100.0 100.0 100.0
Fragile X 355 99.4 99.7 94.9
Noonan 299 99.7 100.0 99.7
Congenital CMV 221 94.6 99.8 95.4
Trisomy 18 208 99.0 99.8 95.8
Turner 123 94.3 100.0 98.3
Trisomy 13 93 90.3 100.0 98.8
deLange 81 97.5 100.0 100.0
Williams 66 97.0 100.0 98.5
Beckwith 56 96.4 100.0 100.0
Prader-Willi 55 100.0 100.0 98.2
Meckel 38 94.7 100.0 100.0
Cri du chat (5p-) 30 100.0 100.0 100.0
Zellweger 30 86.7 100.0 100.0
Klippel-Feil 23 95.7 100.0 100.0
SLOS 23 69.6 100.0 100.0

FAS, fetal alcohol syndrome, SLOS, Smith-Lemli-Opitz syndrome. Average of ten runs of 6000 artificial patients in each run. On average correctly diagnosed 5944, global error rate 0.93%.