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Table 1 Interpretation of 1% APW enriched test and culture results for stool samples tested during the study period, 14th March to 26th June 2015

From: Alkaline peptone water enrichment with a dipstick test to quickly detect and monitor cholera outbreaks

  Standard Diagnostic test (culture)  
Enriched test with 1% APW Positive Negative Total
Positive 91 1 92
Negative 1 9 10
Total 92 10 102
Sensitivity 98.9%, (95% CI: 94.09–99.97%)
Specificity 90%, (95% CI: 55.5–99.75%)
Positive Predictive Value (PPV) 98.9%
Negative Predictive Value(NPV) 90.0%