[Retracted] The Role and Clinical Value of Optimized Fetal Main Pulmonary Artery Doppler Parameters in the Diagnosis and Prognosis Monitoring of Neonatal Respiratory Distress Syndrome

Table 3

The AT/ET ratio at different Doppler sampling positions between two groups of fetuses [].

Group		Middle segment of fetal main pulmonary artery	The middle segment of the left (or right) pulmonary artery of the fetus	Proximal segment of fetal intrapulmonary artery
NRDS group	90	0.19 ± 0.01	0.16 ± 0.03	0.14 ± 0.01
Non-NRDS group	282	0.25 ± 0.02	0.17 ± 0.04	0.15 ± 0.04
		18.935	1.183	1.416
		<0.05	>0.05	>0.05