title: [Evaluation of chemotherapy for stage IV non-small cell lung cancer employing a regression tree type method for quality-adjusted survival analysis to determine prognostic factors].
abstract: To evaluate the effect of chemotherapy on QOL, the survival period was categorized by 3 intervals: one in the hospital for chemotherapy (TOX), on an outpatient basis (TWiST Time without Symptom and Toxicity), and in the hospital for conservative therapy (REL). Coefficients showing the QOL level were expressed as ut, uw and ur. If uw was 1 and ut and ur were plotted at less than 1, ut TOX+uwTWiST+urREL could be a quality-adjusted value relative to TWiST (Q-TWiST). One hundred five patients with stage IV non-small cell lung cancer were included. Sixty-five were given chemotherapy, and the other 40 were not. The observation period was 2 years. Q-TWiST values for age, sex, PS, histology and chemotherapy were calculated. Their quantification was performed employing a regression tree type method. Chemotherapy contributed to Q-TWiST when ut approached 1 i.e., no side effect was supposed). When ut was less than 0.5, PS and sex had an appreciable role.
authors.affiliation: Division of Respiratory Disease, Hokkaido Keiaikai Minami Ichijo Hospital, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Fujita
authors.forename: H
authors.initials: H
authors.lastname: Takabatake
authors.forename: S
authors.initials: S
authors.lastname: Tagaki
authors.forename: T
authors.initials: T
authors.lastname: Sohda
authors.forename: K
authors.initials: K
authors.lastname: Sekine
mesh_terms: D000328:Adult; D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy* / Q000401:mortality; D002945:Cisplatin / Q000008:administration & dosage; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage; D006801:Humans; D007069:Ifosfamide / Q000008:administration & dosage; D007902:Length of Stay; D008175:Lung Neoplasms / Q000188:drug therapy* / Q000401:mortality; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011788:Quality of Life; D012044:Regression Analysis; D016019:Survival Analysis; D014751:Vindesine / Q000008:administration & dosage
chemical_list: D002945:Cisplatin; D014751:Vindesine; D005472:Fluorouracil; D007069:Ifosfamide