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Table 3 Fisher exact contingency table- permanent section analysis

From: Frozen section analysis and sentinel lymph node biopsy in well differentiated thyroid cancer

  (+) Metastasis (−) Metastasis Total  
(+)SLN 43 0 43 PPV = 100.0%
(−) SLN 5 252 257 NPV = 98.1%
Total 48 252 300  
  Sensitivity = 89.6% Specificity = 100.0%   
  1. (+)SLN sentinel lymph node positive for metastasis; (-)SLN sentinel lymph node negative for metastasis; (+)Metastasis Central compartment sample involved with metastasis;
  2. (-) Metastasis Central compartment sample negative for metastasis.
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