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. Author manuscript; available in PMC: 2015 Oct 28.
Published in final edited form as: Arthritis Rheumatol. 2015 Jan;67(1):28–38. doi: 10.1002/art.38904

Figure 2.

Figure 2

Performance characteristics of biomarker levels in RA-ILD. For both the Chinese identification cohort (A) and the US replication cohort (B), receiver operating characteristic curves (shown as area under the curve [AUC]) demonstrate the predictive capacity of MMP-7 level, IP-10 level, rheumatoid factor (RF) titer, and anti–cyclic citrullinated peptide (anti-CCP) titer for the presence of RA-ILD. Ninety-five percent confidence intervals are shown in parentheses. See Figure 1 for other definitions.