title: Potential hazards in the analysis of symptom improvement.
authors.forename: Lucinda
authors.initials: L
authors.lastname: Billingham
authors.forename: Michael
authors.initials: M
authors.lastname: Cullen
mesh_terms: D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy* / Q000401:mortality / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy* / Q000401:mortality / Q000473:pathology; D011788:Quality of Life; D015996:Survival Rate; D016896:Treatment Outcome