Table 2.
Specificity and sensitivity for RA of the antibodies and their combinations.
| anti-CarP | anti-CCP | RF | anti-CCP or RF | anti-CCP or RF or anti-CarP | (anti-CCP or RF) & anti-CarP | |
|---|---|---|---|---|---|---|
| Sensitivity | ||||||
| all | 41.9 | 66.3 | 67.5 | 75.9 | 78.1 | 39.7 |
| anti-CCP− | 17.5 | na | 28.2 | 28.2a | 35.0 | 10.7 |
| anti-CCP− & RF− | 9.4 | na | na | na | 9.4a | na |
| Specificity | ||||||
| all | 87.0 | 91.2 | 83.8 | 79.4 | 71.3 | 94.8 |
| anti-CCP− | 87.8 | na | 87.1 | 87.1a | 78.3 | 96.6 |
| anti-CCP− & RF− | 89.8 | na | na | na | 89.8a | na |
Antibodies were combined with either the or operator of the and (&) operator. All in the row headings refers to all RA patients, the other rows refer to the indicated subset of RA patients. aValues already presented in the table to the right, but duplicated to facilitate comparison. na = not applicable.