Table 2.

NIPT and IPD results in 12,700 pregnant women

№		Positive results	T21	T18	T13	SCAs	RAAs/CNVs
1	NIPT	258	126	40	12	41	39
2	IPD confirmed	198	124	38	7	19	10
3	IPD not confirmed	56	2	1	5	21	27
4	No data	4	0	1	0	1	2

Abbreviations: IPD Invasive prenatal diagnosis, NIPT Non–invasive prenatal testing, T Trisomy, SCA Sex chromosomal aneuploidy, RAA Rare autosomal aneuploidy, CNV Copy number variation