TABLE 2.

Results of the PCR-based technique

No. of positive PCR resultsNo. of IA cases detected/total no. with indicated resultSensitivity (%)NPV (%)aNo. of IA cases detected/total no. with indicated resultSpecificity (%)PPV (%)
True positiveFalse negativeTrue negativeFalse positive
111/121/1291.698.357/7114/7180.343.9
211/121/1291.698.567/714/7194.473.3
39/123/1275.095.869/712/7197.281.8
  • a NPV, negative predictive value.