Abstract: Objective Preliminarily to determine whether it was appropriate for elder patients with non small cell lung cancer to be treated by carboplatin at AUC=5 mg/ml·min level during combined chemotherapy. Methods 33 cases of elder patients with non small cell lung cancer in advanced stage had received 73 cycles combination chemotherapy. Chemotherapy schemes included Taxol+CBP,Gemzar+CBP and NVB+CBP. The dose of carboplatin was at AUC=5 mg/ml·min level (AUC, area under the concentration time curve). Side effects an...