Table 2.
SARS-CoV‑2 binding antibody assay agreement
| S1 IgG | ||||
|---|---|---|---|---|
| Pos | Neg | Total | ||
| RBD pan-Ig | Pos | 99 | 3 | 102 |
| Neg | 1 | 64 | 65 | |
| Total | 100 | 67 | 167 | |
Cohen’s kappa = 0.950 (95% confidence interval [CI] 0.901–0.998)
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