Figure 4.
Trends in relative survival rate (a) and Kaplan–Meier survival curves (b) for patients with pNEN at 9 SEER sites according to grade group (grade 1, grade 2, and grade 3&4) in 1987–1996, 1997–2006, and 2007–2016.
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.