Fig. 1

Receiver-operating characteristic curve (ROC) for predicting very high disease activity according to ASDAS (ASDAS ≥ 3.5). (A) ROC for predicting very high disease activity according to ASDAS among all patients (N = 79). (B) ROC for predicting very high disease activity according to ASDAS among patients using TNF inhibitors (N = 60).