Fig. 2
From: Clinical analysis of patients with skeletal metastasis of lung cancer
Kaplan-Meier plots of lung cancer survival according to a) age at diagnosis of lung cancer, b) pathologic type of lung cancer, c) whether chemotherapy was performed for skeletal metastasis, and d) whether radiation therapy was performed for skeletal metastasis. Median survivals are expressed in months. Statistical significance was assessed by the log-rank test