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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