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Table 2 Correlation between ultrasound and CNB

From: Can concurrent core biopsy and fine needle aspiration biopsy improve the false negative rate of sonographically detectable breast lesions?

   Core biopsy Total
   M B, I, S  
Ultrasound M 205 4 209
  B, I, S 675 1169 1844
Total   880 1173 2053
Pearson chi-squared p-value Kappa coefficient p-value
289.732 < 0.0001 0.254 < 0.0001
Sensitivity 0.2330 Positive predictive value 0.9809
Specificity 0.9966 Negative predictive value 0.6339
  1. B: benign, I: indeterminate, S: suspicious, M: malignant