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.
Overall survival in the intention-to-treat (ITT) population by treatment group. Adjusted hazard ratio (HR) is determined with Cox regression stratified for tumor site (oropharynx or nonoropharynx) and adjusted for T stage/dose escalation (T1-T2;T3-T4/68.0 Gy;73.1Gy) and WHO/Eastern Cooperative Oncology Group performance status (WHO 0;WHO 1-2).
