Table 5.

Diagnostic value of different indexes for fetal distress

Groups	Sensitivity	Specificity	Yoden index	Area under the curve (AUC)	Cutoff value	P	95% CI
							Upper limitation	Lower limitation
Umbilical artery S/D	0.533	0.975	0.508	0.788	3.771	<0.001	0.674	0.902
Umbilical artery RI	0.867	0.725	0.592	0.870	0.665	<0.001	0.789	0.952
Umbilical artery PI	0.767	0.800	0.567	0.847	1.595	<0.001	0.759	0.936
Middle cerebral artery S/D	1.000	0.625	0.625	0.852	4.801	<0.001	0.766	0.937
Middle cerebral artery PI	0.933	0.500	0.433	0.802	0.802	<0.001	0.705	0.904
Middle cerebral artery RI	0.467	0.800	0.267	0.658	1.292	0.025	0.526	0.790
Fetal movement reduction	0.700	0.800	0.500	0.750		<0.001	0.630	0.870
Combined indexes	1.000	1.000	1.000	1.000a,b,c,d,e,f,g	1.000	<0.001	1.000	1.000

Note: Compared with umbilical artery S/D;

^aP<0.05.

Compared with umbilical artery RI;

^bP<0.05.

Compared with umbilical artery PI;

^cP<0.05.

Compared with middle cerebral artery S/D;

^dP<0.05.

Compared with middle cerebral artery PI;

^eP<0.05.

Compared with middle cerebral artery RI;

^fP<0.05.

Compared with fetal movement reduction;

^gP<0.05.

RI: resistance index; PI: pulsatility index; S/D: systolic blood flow velocity to end-diastolic blood flow velocity.