Table 4.
Outbreak field study SARS CoV-2 serological results.
| PCR positive (n = 92)Female = 75%Mean age 70.4Median age 76.5 (20–102) | PCR negative/not done or serology consensus non-reactive (n = 189)Female = 71% (1 unknown sex)Mean age 59.1Median age 57 (22–102) | |||||
|---|---|---|---|---|---|---|
| Reactive | Non-Reactive | % Sensitivity (95% CI) | Reactive | Non-Reactive | Estimated % Specificity (95% CI) | |
| DiaSorin IgG | 88 | 4 | 95.7 (89.4–98.3) | 6 | 183 | 96.8 (93.3–98.5) |
| Abbott IgG | 88 | 4 | 95.7 (89.4–98.3) | 3 | 186 | 98.4 (95.4–99.5) |
| Ortho IgG | 91 | 1 | 98.9 (94.1–99.8) | 2 | 187 | 98.9 (96.2–99.7) |
| Ortho T | 91 | 1 | 98.9 (94.1–99.8) | 4 | 185 | 97.9 (94.7–99.2) |
| Siemens T | 90 | 2 | 97.8 (92.4–99.4) | 2 | 187 | 98.9 (96.2–99.7) |
| Roche T | 91 | 1 | 98.9 (94.1–99.8) | 3 | 186 | 98.4 (95.4–99.5) |
McNemar's p values for sensitivity and specificity comparisons between the assays were all ≥0.4.