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Table 2 Classification results of different gestational weeks and different planes

From: Automated prediction of early spontaneous miscarriage based on the analyzing ultrasonographic gestational sac imaging by the convolutional neural network: a case-control and cohort study

Gestational age Sonographic planes Accuracy,% (95%CI) Sensitivity,% (95%CI) Specificity,% (95%CI) PPV,% (95%CI) NPV,% (95%CI) AUC (95%CI)
sixth week Tran 83.07 (78.10, 93.40) 82.30 (72.45, 95.34) 83.89 (73.74, 94.04) 84.08 (72.83, 95.34) 81.87 (71.08, 92.67) 0.863 (0.737, 0.922)
Sag 82.59 (74.16, 94.76) 82.39 (68.60, 98.10) 82.79 (71.90, 94.90) 82.96 (67.94, 97.97) 82.29 (72.05, 92.53) 0.849 (0.716, 0.935)
Tran+ Sag 86.53 (83.11, 97.83) 88.71 (79.80, 97.99) 83.57 (73.66, 94.08) 81.07 (70.61, 91.53) 88.85 (78.50, 99.19) 0.904 (0.781, 0.950)
seventh week Tran 76.94 (76.08, 89.17) 72.44 (65.19, 80.16) 80.94 (71.14, 91.54) 83.96 (73.46, 94.47) 68.05 (55.67, 94.47) 0.827 (0.706, 0.833)
Sag 78.52 (76.88, 88.62) 76.62 (69.34, 84.53) 81.42 (72.99, 90.67) 82.93 (72.30, 93.55) 74.73 (63.17, 86.28) 0.829 (0.733, 0.838)
Tran+ Sag 78.35 (76.19, 91.90) 77.96 (64.83, 91.90) 78.87 (69.46, 89.49) 79.26 (65.54, 92.99) 77.61 (67.90, 87.33) 0.832 (0.702, 0.865)
eighth week Tran 82.21 (72.72–99.02) 83.22 (69.80, 96.40) 77.08 (59.96, 96.35) 74.60 (61.93, 87.26) 84.89 (72.51, 97.28) 0.855 (0.706, 0.938)
Sag 81.15 (71.03–95.58) 81.38 (68.58, 94.04) 79.40 (62.58, 97.04) 77.94 (66.58, 89.31) 82.02 (68.95, 95.09) 0.838 (0.694, 0.929)
Tran+ Sag 77.88 (77.14–95.19) 77.55 (72.13, 95.19) 82.94 (75.59, 93.01) 84.48 (74.75, 94.22) 75.56 (67.66, 83.46) 0.858 (0.729, 0.829)
Overall Tran 79.34 (73.44, 85.25) 77.06 (67.42, 86.70) 81.05 (73.89, 88.21) 82.22 (77.63, 86.82) 74.82 (59.65, 89.99) 0.843 (0.801, 0.884)
Sag 80.07 (75.49, 84.66) 79.18 (72.63, 85.72) 81.36 (75.13, 87.60) 81.85 (77.82, 85.88) 78.21 (69.03, 87.38) 0.834 (0.776, 0.893)
Tran+ Sag 80.32 (72.38, 88.25) 80.73 (69.16, 92.30) 80.91 (76.75, 85.08) 81.18 (79.10, 83.26) 80.02 (66.37, 93.68) 0.857 (0.793, 0.922)
  1. Overall: Include all data for 6–8 weeks
  2. Auc Area Under Curve, CI Confidence Interval, Tran Transverse plane, Sag Sagittal plane, PPV positive predictive value, NPV negative predictive value