Figure 1 .
Receiver operating characteristic curves showing the relation between the value of the calculated activity index and the presence of active or very active disease in (A) SSc whole series; (B) dSSc; (C) lSSc. AUC = area under the curve.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.