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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%