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Table 1 The detection efficiency of T21, T18, and T13 in NIPT

From: Expanding the application of non-invasive prenatal testing in the detection of foetal chromosomal copy number variations

NIPT TP FP PPV (%) Sensitivity (%) TN FN NPV (%) Specificity (%)
T21 88 11 88.89 98.88 38,874 1 99.99 99.97
T18 16 14 53.33 100 38,944 0 100 99.96
T13 5 20 20 100 38,949 0 100 99.95