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Results of the PCR-based technique
| No. of positive PCR results | No. of IA cases detected/total no. with indicated result
|
Sensitivity (%) | NPV (%)a | No. of IA cases detected/total no. with indicated result
|
Specificity (%) | PPV (%) | ||
|---|---|---|---|---|---|---|---|---|
| True positive | False negative | True negative | False positive | |||||
| 1 | 11/12 | 1/12 | 91.6 | 98.3 | 57/71 | 14/71 | 80.3 | 43.9 |
| 2 | 11/12 | 1/12 | 91.6 | 98.5 | 67/71 | 4/71 | 94.4 | 73.3 |
| 3 | 9/12 | 3/12 | 75.0 | 95.8 | 69/71 | 2/71 | 97.2 | 81.8 |
NPV, negative predictive value.
