A New Model for Providing Cell-Free DNA and Risk Assessment for Chromosome Abnormalities in a Public Hospital Setting

Table 1

Amniocentesis utilization and reason: 2013 AMA Options verses 2012 all AMA.

	2013 AMA Options			2012 all AMA			𝑃 value
	𝑁	Amnio./CVS, n	% (n/N)	𝑁	Amnio./CVS, 𝑛	% (n/N)
Total	161	21	13.0%	457	87	19.0%	0.08
Anomaly	0	0	0.0%	9	7	77.8%
SM + Abnormal screen	0	0	0.0%	9	6	66.7%
Soft marker only	5	1	20.0%	37	9	24.3%	0.83
Abnormal serum screen only	7	2	28.6%	58	18	31.0%	0.91
Family history	4	0	0.0%	16	3	18.8%	0.35
AMA only	145	18	12.4%	328	44	13.4%	0.77