Table 2.
Performance Comparison of the Techniques (QUIK CHEK®, ELISA and qPCR) in Detecting Cryptosporidium spp.
| Methods Comparison (n = 832) |
Sensitivity | Specificity | PPV | NPV | Agreement Analysis |
|---|---|---|---|---|---|
| QUIK CHEK vs ELISAa | 96.7% | 99.0% | 78.4% | 99.9% | κ = 0.860 (P < .0001) |
| QUIK CHEK vs qPCRa | 50.0% | 100.0% | 100% | 95.3% | κ = 0.646 (P < .0001) |
| ELISA vs qPCRa | 40.5% | 100.0% | 100% | 94.5% | κ = 0.554 (P < .0001) |
Abbreviations: ELISA, enzyme-linked immunosorbent assay; NPV, negative predictive value; PPV, positive predictive value; qPCR, quantitative polymerase chain reaction.
aGold standard.