Serological component | Scores a | | | Logistic regression b |
|---|
Specificity | Sensitivity | Accuracy | Specificity | Accuracy |
|---|
2010 ACR/EULAR | 72.6 | 78.8 | 75.8 | 73.7 | 77.1 |
Concordance | 75.3 | 78.8 | 77.1 | 74.9 | 77.8 |
Ccdc. + 2010 | 76.4 | 80.6 | 78.8 | 76.8 | 78.6 |
- aScores were as in the 2010 ACR/EULAR criteria; or depending on the number of concordant antibodies as 5 for 3, 3 for 2, and 1 for 1 antibodies; or combining the two criteria as 5 for 3 or 2 antibodies with high titres, 3 for 3 or 2 antibodies with low titres, and 1 for 1 antibody irrespective of the titres
- bClassification was done with logistic regression including the non-serological and the serological criteria and adjusted to obtain 80% sensitivity
