Diagnostic Value and High-Risk Factors of Two-Dimensional Ultrasonography Combined with Four-Dimensional Ultrasonography in Prenatal Ultrasound Screening of Fetal Congenital Malformations

Table 3

Diagnostic efficacy analysis of different detection methods.

Examination method	Accuracy (%)	Sensitivity (%)	Specificity (%)
2D-US	81.40	43.68	82.92
4D-US	83.67	51.72	84.95
Joint examination	93.59	90.80	93.70

Note: vs. combination group.