Table 5.
Agreement between the evaluated assays (528 samples) (95% confidence interval).
| ELISA IgG antiNP (Epitope) k, SE of k (95% CI) |
CLIA IgG antiS1/S2 (DiaSorin) k, SE of k, (95% CI) |
CMIA IgG antiNP (Abbott) k, SE of k, (95% CI) |
CMIA IgM antiS (Abbott) k, SE of k (95% CI) |
|
|---|---|---|---|---|
| ECLIA total antiNP (Roche) |
0.624, 0.036 (0.55–0.69) moderate |
0.697, 0.034, (0.63–0.76) substantial |
0.773, 0.030 (0.71–0.83) substantial |
|
| ELISA IgG antiNP (Epitope) |
0.622, 0.036, (0.55–0.69) moderate |
0.780, 0.029 (0.72–0.83) substantial |
||
| CLIA IgG antiS1/S2 (DiaSorin) |
0.706, 0.034, (0.64–0.77) substantial |
|||
| ELISA IgM antiNP (Epitope) |
0.192, 0.024, (0.14–0.23) fair |
95% CI = 95% confidence interval. k = Cohen’s kappa. SE of k = standard error for kappa statistic.