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Table 4 Sensitivities, specificities, PPV and NPV of participant microscopists against expert microscopists

From: Quality control of malaria microscopy reveals misdiagnosed non-falciparum species and other microscopically detectable pathogens in Senegal

   Controllers Total
Positive Negative
Hospital technicians Positive 89 1 90
Negative 3 87 90
Total 92 88 180
Sensitivity (%) 96.7    
Specificity (%) 98.9    
PPV (%) 98.9    
NPV (%) 96.7    
Health centers technicians Positive 132 3 135
Negative 2 133 135
Total 134 136 270
Sensitivity (%) 98.5    
Specificity (%) 97.8    
PPV (%) 97.8    
NPV (%) 98.5