Figure 2.
Kaplan–Meier survival curves of PFS (A) and OS rates (B) before propensity score matching analysis.
Abbreviations: OS, overall survival; PFS, progression-free survival.
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.