Comorbidity: Usage of, and survival after chemotherapy for advanced lung cancer.

e19157 Background: Comorbidity may influence prognosis in lung cancer, affect performance status (PS) of patients as well as complicate treatment. The present study examines usage and outcome of chemotherapy (CT) for advanced-stage lung cancer, and focuses on the role of comorbidity. Methods: Patients with advanced-stage lung cancer were identified in the Danish Lung Cancer Registry. A total of 22,999 patients with non-resectable, advanced-stage lung cancer were identified. Data on stage, PS, Charlson comorbidity score (ChS), age, histology and type of first treatment (if any) were avaliable. First treatment was categorized as chemotherapy (n=7,346), chemo-radiotherapy (2,636), radiotherapy (n=4,155) or no therapy (n=8,862). Survival was examined separately for 0-1 year and 1-5 years, and further distinction was made between metastatic and non-metastatic lung cancer. Data are presented for the subgroup of patients receiving chemotherapy as first treatment only. All estimates are derived from logistic regr...