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Table 2 Data from Table 1 is translated into percentages: false-positive and false-negative test results are expressed with respect to all cases tested by NIPT and with respect to all cases having a positive test result after NIPT

From: False-positives and false-negatives in non-invasive prenatal testing (NIPT): what can we learn from a meta-analyses on > 750,000 tests?

with respect to all NIPT tests Table 1 of corresp. tested cases [%] with respect to Table 1 of corresp. tested cases [%]
Indication NIPT positives False positive False negative False positive False negative
a
all 1.858 1.211 0.0079 47.17 0.65
b
T13 0.101 0.048 0.0020 44.25 1.89
T18 0.228 0.041 0.0046 18.52 2.07
T21 0.796 0.077 0.0046 9.79 0.59
SCAs 0.448 0.248 0.0004 55.45 0.08
RATs 0.244 0.206 0.0000 84.50 0.00