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Table 4 Sensitivity and specificity of settlement status assessments

From: Finding inhabited settlements and tracking vaccination progress: the application of satellite imagery analysis to guide the immunization response to confirmation of previously-undetected, ongoing endemic wild poliovirus transmission in Borno State, Nigeria

 

Security personnel field data

 

Settlement status data

True

False

 True

1064

186

PPV = 85.1%

 False

70

311

NPV = 81.6%

 

Sensitivity = 93.8%

Specificity = 62.6%

Accuracy = 84.3%

  1. PPV positive predictive value, NPV negative predictive value