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Table 3 Diagnostic accuracy of prenatal ultrasound (US) and prenatal MRI of fetal congenital anomalies

From: Added value of fetal MRI as a complementary method to antenatal ultrasound in the assessment of non-CNS fetal congenital anomalies

  Pathology Sensitivity 95% CI Specificity
95% CI
PPV
95% CI
NPV
95% CI
Accuracy
95% CI
P value
Positive
(n = 30)
Negative
(n = 0)
No % No %
Total sample (n = 30) The prenatal US      76% (0.56, 0.82) 0% (0.0, 1.0) 100% (0.91, 1.0) 0% (0.0, 0.21) 76% (0.56, 0.82)  < 0.0001*
Positive 23 76.6 0 0
Negative 7 23.2 0 0
Prenatal MRI      96.6% (0.82, 0.98) 0% (0.0, 1.0) 100% (0.93, 1.0) 0% (0.0, 0.60) 96.6% (0.82, 0.98) 0.04*
Positive 29 96.5 0 0
Negative 1 3.3 0 0
Combined MRI/US      100% (0.93, 1.0) 0% (0.0, 1.0) 100% (0.93, 1.0) 0% (0.0, 0.60) 100% (0.93, 1.0)
Positive 30 100 0 0
Negative 0 0 0 0
  1. Values in parentheses are 95% CI. Diagnostic accuracy of each technique compared using McNemar’s test with p < 0.05