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.
Evidence for known groups validity of the Non–Small Cell Lung Cancer Symptom Assessment Questionnaire (NSCLC-SAQ). Lower scores indicate lower symptom severity. Overall significance for all comparisons was P < 0.001. ECOG = Eastern Cooperative Oncology Group.
