RA Predictive value
Positive N (%) Negative N (%)
Anti-CP Positive 188(70.67%) 20(14.93%) 90.38%1
Negative 78(29.33%) 114(85.07%) 59.37%2
1Positive predictive value.
2Negative predictive value.
Sensitivity=70.67%
Specificity=85.07%
Table 3: Relative distribution of anti-CCP results in studied patients according to RA diagnosis.