Fig. 3
From: Serum complement 3 is a potential biomarker for assessing disease activity in Takayasu arteritis
The external validation of CRP and C3 to identify the active disease based on the validating data in TA. a The distribution of C3, CRP, ESR, and disease activity in validation data (blue line—the cut-off reference line of C3 and CRP in original data; dot colour—disease activity status, “red” indicates active disease status, “green” indicates inactive disease status; dot size—ESR). b The ROC curve of parallel test (CRP and C3) to identify disease activity in validation data of TA