<qa>  What is the quality of life questionnaire?Patients scheduled for surgery, radiation therapy, or chemotherapy complete the European Organization for Research and Treatment of Cancer EORTC quality of life questionnaire QLQ-core 30 C30 and QLQ-Lung Cancer 13 LC13 in addition to psychosocial health and smoking status questions from baseline up to 2 weeks prior to the start of treatment, 5-6 weeks after treatment begins, and 5-6 months from the start of treatment. During the same time points, patients also undergo functionfitness assessments including standard health measurements, short physical performance battery SPPB, 6 minute walk test 6MWT, and a grip strength test. 