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Table 4 Results of brush biopsy and scalpel biopsy

From: The efficacy of oral brush biopsy with computer-assisted analysis in identifying precancerous and cancerous lesions

N = 79 Scalpel Biopsy
Malignant or Dysplastic
Scalpel Biopsy
Benign
Total
Brush Biopsy Positive 1 0 1
Brush Biopsy Atypical 25 5 30
Brush Biopsy Negative 1 47 48
Total 27 52 79
  1. Sensitivity of brush biopsy: 96.3%; 95% CI, 87%-100%).
  2. Specificity of "positive" brush biopsy result: 100%; 95% CI, 93%-100%
  3. Specificity for "atypical" brush biopsy result: 90.4%; 95% CI, 82%-97%
  4. Positive predictive value of an abnormal brush biopsy: 84%
  5. Negative predictive value of an abnormal brush biopsy value: 98%.