Table 2 Diagnostic specificity of the in-house N-protein based ELISA
From: Sensitive and specific serological ELISA for the detection of SARS-CoV-2 infections
Sample group | Number | Negative | Borderline | Positive | Specificity (%) |
|---|---|---|---|---|---|
SARS-CoV-2 [–] | 1500 | 1482 | 8 | 10 | 99.3 |
COPD | 276 | 273 | 0 | 3 | 98.9 |
Non-smokers | 684 | 676 | 5 | 3 | 99.6 |
Light smokers | 457 | 451 | 2 | 4 | 99.1 |
Heavy smokers | 359 | 355 | 1 | 3 | 99.2 |
Male | 710 | 699 | 4 | 7 | 99.0 |
Female | 789 | 782 | 4 | 3 | 99.6 |
Normal weight | 495 | 489 | 4 | 2 | 99.6 |
Pre-obesity | 550 | 543 | 4 | 3 | 99.5 |
Obesity grade I | 238 | 237 | 0 | 1 | 99.6 |
Obesity grade II | 116 | 113 | 0 | 3 | 97.4 |
Obesity grade III | 100 | 99 | 0 | 1 | 99.0 |