Table 3 Diagnostic performance of sign combinations in differentiating PI + PP from Normal + PA groups.

From: Increased intra-myometrial vascularity adds diagnostic value to MRI for high-risk placenta accreta spectrum

Sign combination

Selected risk signs

p value

Odds ratio

AUC

AIC

SE

SP

PPV

NPV

Ac

Our combination

Bulge

0.0011

10.70

0.84

122.02

0.70

0.76

0.49

0.92

0.75

Myometrial thinning

0.2061

1.60

Increased intra-myometrial vascularity

0.0026

9.10

Bladder wall interruption

0.0081

7.02

Combination without the novel sign

Bulge

0.0003

12.86

0.79

128.44

0.87

0.54

0.29

0.94

0.59

Myometrial thinning

0.2131

1.55

Bladder wall interruption

0.0005

11.94

  1. SE: sensitivity; SP: specificity; PPV: positive predictive value; NPV: negative predictive value; Ac: accuracy; AUC: area under the curve; AIC: Akaike information criterion; p values < 0.05 are statistically significant.
Back to article page