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Table 2 Specificity and sensitivity of the newly developed PCR assay using the conventional antibiotic susceptibility test

From: Development and evaluation of a simple PCR assay and nested PCR for rapid detection of clarithromycin-resistant Helicobacter pylori from culture and directly from the biopsy samples in India

PCR assay

Conventional antibiotic susceptibility test

Total

Resistant

Sensitive

Resistant

21

0

21

Sensitive

0

240

240

Total

21

240

261

  1. Sensitivity = 21/(0 + 21) × 100 = 100%
  2. Specificity = 240/(0 + 240) × 100 = 100%
  3. Positive predictive value = 21/(0 + 21) × 100 = 100%
  4. Negative predictive value = 240/(0 + 236) × 100 = 100%
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Gut Pathogens

ISSN: 1757-4749