[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 5

Compared with the actual situation of postnatal clinical diagnosis of NRDS, the consistency and differences of various evaluation methods of FLM.

Evaluate the FLM method	McNemar’s test ( value)	Kappa coefficient	Degree of consistency
Foam test	<0.001	0.142	Weak
OD650	0.075	0.445	Moderate
Amniotic fluid PG	<0.001	0.339	Weak
Amniotic fluid L/S ratio	0.131	0.679	Height
Combination of PG and L/S	1.000	0.901	Extremely strong
Doppler AE/ET ratio of fetal main pulmonary artery	0.262	0.752	Height