Table 6.
The correlation between the investigated methods and the reference anti-SARS-CoV-2 IgM/IgA results, as assessed with Spearman correlation test.
| Comparison | Significance level p | Correlation r | Strenght of correlation r |
|---|---|---|---|
| Reference result vs IgM Novatec | p = 0.00323 | r = 0.3486 | Moderate |
| Reference result vs IgA Novatec | p < 0.0001 | r = 0.4478 | Moderate |
| Reference result vs IgA Euroimmun | p < 0.0001 | r = 0.4854 | Moderate |
| Reference result vs IgA/IgM Vircell | p < 0.0001 | r = 0.6505 | High |
| Reference result vs IgM Snibe | p < 0.0001 | r = 0.6526 | High |
| Reference result vs Roche | p < 0.0001 | r = 0.7403 | Very high |