Table 4 Diagnostic accuracy of QRBD and CLIA test kit in reference to WANTAI and level of agreement
Test Name | WANTAI | Test accuracy of QRBD (95% CI) | Total agreement | Kappa (SE, 95% CI) | |||
|---|---|---|---|---|---|---|---|
Positive | Negative | Total | |||||
QRBD | Positive | 2482 (98.3) | 42 (1.6) | 2524 (100.0) | Sensitivity: 94.6% (93.6–95.4%) Specificity: 94.3% (92.3–95.8%) | 94.5% | 0.84 (SE = 0.018) (95% CI 0.80–0.87) |
Negative | 142 (17.1) | 691 (82.9) | 833 (100.0) | ||||
CLIA | Positive | 1098 (98.9) | 12 (1.1) | 1110 (100.0) | Sensitivity: 40.3% (38.4–42.2%) Specificity: 98.4% (97.3–99.2%) | 53.1% | 0.22 (SE = 0.011) (95% CI 0.19–0.24) |
Negative | 1627 (68.3) | 754 (31.7) | 2381 (100.0) | ||||