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| Test | RFFIT | Total | Sensitivity (%) | Specificity (%) | Kappa value | ||
|---|---|---|---|---|---|---|---|
| Positive | Negative | ||||||
| In-house ELISA | Positive | 190 | 7 | 197 | 90.48 | 80.00 | 0.647 |
| Negative | 20 | 28 | 48 | ||||
| Total | 210 | 35 | 245 | ||||
Note: Kappa (κ) value of 0.61–0.80 is considered as a substantial agreement between the two tests [29].
