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.
Survival curves for patients with or without chemotherapy and according to chemotherapy regimens in patients seen between 1995 and 2004 with WHO performance status of 0–2 and ages <70 years receiving radiation doses of 30 Gy or higher. Left panel, ○: chemotherapy (+) (n = 108); ●: chemotherapy (−) (n = 31); p = 0.0004. Right panel, ○: high-dose methotrexate-containing regimens (n = 56); ●: other regimens (n = 52); p = 0.049.
