Table 3. Breakdown of the NIPT Final Results.

			Increasing Positivity Rate ------>
	All Samples	Frequency	Personal/Family History Only	Maternal Age Only	Serum Screening Only	Multifetal Gestation	Ultrasound Finding Only
Results	(n = 100,000)	1/X	(n = 4,038)	(n = 59,669)	(n = 11,295)	(n = 3,530)	(n = 13,915)
Negative	95.95%	-	97.5%	96.0%	96.0%	93.9%	95.3%
Trisomy 21	1.51%	66	0.25%	0.99%	1.76%	1.79%	1.78%
Trisomy 18	0.45%	222	0.07%	0.27%	0.31%	0.60%	0.78%
Trisomy 13	0.21%	476	0.00%	0.12%	0.21%	0.23%	0.47%
Not Reportable - Other	0.84%	119	0.84%	0.82%	0.88%	1.02%	0.92%
Not Reportable - QNS	1.08%	93	1.31%	1.21%	0.81%	2.44%	0.73%

Trisomy 13 and 18 began reporting in February 2012.