Table 2.

Chi-square test with abnormal ultrasound markers and prenatal diagnoses

Findings on ultrasound	Prenatal diagnostic results		P
Increased NT (n (%))	Normal	267(48.46)	0.098#
	Aberrant	27(38.03)
Absent nasal bone (n (%))	Normal	61(11.07)	0.687
	Aberrant	9(12.68)
Choroid plexus cyst (n (%))	Normal	45(8.17)	0.241
	Aberrant	3(4.23)
Short femur (n (%))	Normal	25(4.54)	0.344
	Aberrant	1(1.41)
Mild ventriculomegaly (n (%))	Normal	25(4.54)	0.1
	Aberrant	0(0)
Tricuspid regurgitation (n (%))	Normal	17(3.09)	1
	Aberrant	2(2.82)
Aberrant right subclavian artery (n (%))	Normal	18(3.27)	0.712
	Aberrant	1(1.41)
Echogenic bowel (n (%))	Normal	12(2.18)	0.378
	Aberrant	0(0)
Single umbilical artery (n (%))	Normal	12(2.18)	0.378
	Aberrant	0(0)
Echogenic intracardiac focus (n (%))	Normal	2(0.36)	0.012*
	Aberrant	3(4.23)
Other (n (%))	Normal	15(2.72)	0.239
	Aberrant	0(0)
Multiple soft markers (n (%))	Normal	52(9.44)	< 0.001***
	Aberrant	25(35.21)

^# P < 0.1, *P < 0.05, ** P < 0.01, ***P < 0.001