| RT-PCRb |  |
---|
 | Positive | Negative | Total |
---|
ELISAa | Â | Â | Â |
   Positive | 14 | 0 | 14 |
   Negative | 6 | 40 | 46 |
Total | 20 | 40 | 60 |
- Compared to RT-PCR, the positive coincidence rate of ELISA:
- 14/(14 + 6) × 100% = 70%; the negative coincidence rate of ELISA: 40/(40 + 0) × 100% = 100%; the total coincidence rate: (14 + 40)/60 = 90%;
- a Antigen capture ELISA assay
- b Reverse transcription polymerase chain reaction