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Positive agreement to PCR of anti-SARS-CoV-2 ELISA according to time.
| r-N ELISA IgG | |||||
|---|---|---|---|---|---|
| Days post PCR confirmation | n | Neg | Pos | Bord* | Positive (%) agreement to PCR (95% CI) |
| ≤10 | 66 | 30 | 32 | 4 | 48 % (35.99-61.12%) |
| (11-20) | 66 | 5 | 54 | 7 | 82 % (70.39-0.24%) |
| ≥21 | 25 | 0 | 25 | 0 | 100 % (82.28-100.0%) |
| DPP IgG | |||||
| Days post PCR confirmation | n | Neg | Pos | Positive (%) agreement to PCR (95% CI) | |
| ≤10 | 66 | 35 | 31 | 47% (34.56-59.66%) | |
| (11-20) | 66 | 18 | 48 | 73% (60.36-82.97%) | |
| ≥21 | 25 | 4 | 21 | 84% (63.92-95.46%) | |
Borderline counted as negative.
