[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 4

AT/ET ratio of fetal main pulmonary artery Doppler parameters and amniotic fluid to evaluate the diagnostic efficacy of FLM.

Evaluate the FLM method	Clinical outcome		Diagnostic performance parameters (%)
	NRDS	Non-NRDS	Sensitivity	Specificity degree	Accuracy
Foam test			100	52.36	55.87
Immature	90	134
Mature	0	148
OD650			80.00	88.87	88.36
<0.150	70	31
≥0.150	20	251
Amniotic fluid PG			100	77.79	79.43
Negative	90	63
Positive	0	219
Amniotic fluid LBG S ratio			100	93.66	94.17
<2	90	18
≥ 2 or 3	0	264
Combination of PG and L/S			100	98.43	98.56
Immature	90	4
Mature	0	278
Doppler AE/ET			100	95.28	95.57
≤0.2175	90	13
>0.2175	0	269