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.
The performance of R2-ISS risk stratification. (A,B) PFS and OS according to R2-ISS. (C) The redistribution of patients with MM from R-ISS to R2-ISS. (D) OS of patients with R-ISS II redistributed by R2-ISS. CI: Confidence interval; HR: Hazard ratio;MM: Multiple myeloma; OS: Overall survival; PFS: Progression-free survival; R2-ISS: Second Revision of the International Staging System; R-ISS: Revision of the International Staging System.
