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Table 6 Diagnostic values of discordances of fetal growth parameters in the late third-trimester for growth discordancea

From: Predictive value of prenatal ultrasound parameters for dichorionic growth discordant twins

Parameter Late third-trimester
AUC P 95% CI Youden index Cut-off (%) Sensitivity (%) Specificity (%) PPV (%) NPV (%) +LR
BPD 0.634 0.005 0.58–0.69 0.27 3.49 67.44 59.72 62.61 64.72 1.67
HC 0.617 0.048 0.54–0.69 0.23 5.81 38.71 84.72 71.70 58.02 2.53
AC 0.683 < 0.001 0.63–0.73 0.29 7.69 44.19 85.11 74.80 60.39 2.97
FL 0.751 < 0.001 0.70–0.80 0.43 5.97 51.16 91.84 86.24 65.28 6.27
EFW 0.759 < 0.001 0.71–0.80 0.43 14.37 69.77 73.50 72.47 70.86 2.63
  1. aBPD biparietal diameter; HC head circumference; AC abdominal circumference; FL femur length; EFW estimated fetal weight; AUC area under the curve; CI confidence interval; PPV positive predictive value; NPV negative predictive value; +LR positive likelihood ratio