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Table 6 Prediction of radiographic damage at 5 years for different cut-off levels of baseline anti-CCP titer

From: Long-term stability of anti-cyclic citrullinated peptide antibody status in patients with early inflammatory polyarthritis

Anti-CCP titer cut-off Erosions Larsen score ≥ 15
  Sensitivity Specificity Accuracy LR+ve LR-ve Sensitivity Specificity Accuracy LR+ve LR-ve
1 0.80 0.54 0.65 1.7 0.4 0.88 0.52 0.63 1.8 0.2
2 0.59 0.86 0.74 4.2 0.5 0.69 0.82 0.78 3.8 0.4
3 0.56 0.89 0.75 5.0 0.5 0.66 0.85 0.79 4.4 0.4
4 0.54 0.90 0.74 5.3 0.5 0.62 0.86 0.79 4.6 0.4
5 0.53 0.90 0.74 5.2 0.5 0.61 0.86 0.79 4.5 0.5
10 0.50 0.91 0.73 5.5 0.6 0.57 0.87 0.78 4.5 0.5
  1. LR+ve, positive likelihood ratio; LR-ve, negative likelihood ratio.