Table 4 |
|||||
|
Value of κ statistic between the different ACPA assays in population 2 |
|||||
|
κ |
|||||
|
AhFibA |
Anti-CCP1 |
Anti-CCP2 |
Anti-PepA |
Anti-PepB |
|
|
|
|||||
|
AhFibA |
- |
||||
|
Anti-CCP1 |
0.552 |
- |
|||
|
Anti-CCP2 |
0.710 |
0.609 |
- |
||
|
Anti-PepA |
0.540 |
0.766 |
0.605 |
- |
|
|
Anti-PepB |
0.618 |
0.811 |
0.679 |
0.842 |
- |
|
|
|||||
|
Values for κ statistic were calculated after dichotomization with previously defined >98% specific cut-offs [5,14,18]. ACPA, anti-citrullinated protein/peptide antibody; AhFibA, anti-human fibrinogen (auto)antibodies; CCP, cyclic citrullinated peptide. |
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|
Vander Cruyssen et al. Arthritis Research & Therapy 2006 8:R122 doi:10.1186/ar2011 |
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