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Table 1 Diagnostic performance of serum markers using different cut offs

From: Diagnostic performance and predictive value of serum markers for the diagnosis of rheumatoid arthritis

Antibody Cutoff Sensitivity (%) Specificity (%) PPV (%)
PepA Low 63.6 90.6 60.7
PepB   64.3 90.0 59.0
RF   69.2 90.1 61.5
PepA Intermediate 62.9 95.1 74.4
PepB   61.5 95.1 73.3
RF   55.2 94.6 69.9
PepA High 58.7 98.1 87.5
PepB   48.3 98.1 85.2
RF   42.0 97.8 81.1
PepA Very high 41.3 99.0 90.8
PepB   37.1 99.0 89.8
RF   21.0 99.0 83.3