Table 2 Characteristics of prediction model based on Bootstrap internal validation.

From: A ultrasonic nomogram of quantitative parameters for diagnosing breast cancer

 

AUC

Cut-off

Sen

Spe

NPV

PPV

Nomogram

0.934

0.310

0.881

0.848

0.841

0.795

BI-RADS

0.831

 > 4a

0.702

0.84

0.808

0.747

Emean

0.796

43.325

0.773

0.784

0.838

0.707

VI

0.717

4.61

0.607

0.744

0.738

0.614

Age

0.786

47.5

0.75

0.72

0.811

0.642

Symptomatic

0.627

0.5

0.821

0.432

0.771

0.493

  1. PPV, positive predictive value; NPV, negative predictive value; PLR, positive likelihood ratio; NLR, negative likelihood ratio; AUC, area under the receiver operating characteristics.
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