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Table 2 Bayesian analysis of the positive and negative results

From: Towards accurate exclusion of neonatal bacterial meningitis: a feasibility study of a novel 16S rDNA PCR assay

 Specificity (%)
Sensitivity (%)a999999
Negative predictive value0.9990.9990.999
Positive predictive value0.070.140.41
  1. a assumed for the purposes of this analysis and is based on the reported sensitivity of a rigorously-designed bacterium-specific qPCR assay [6]
  2. b prevalence amongst babies tested for meningitis as based on our practice [15]