The Role of Combination Maintenance with Pemetrexed and Bevacizumab for Advanced Stage Nonsquamous Non-Small Cell Lung Cancer: A Systematic Review and Meta-Analysis

Figure 9

Subgroup analysis of overall survival defined by age, ECOG score, and smoking history. (a) Overall survival based on age. (b) Overall survival based on ECOG score. (c) Overall survival based on smoking history. Pem: pemetrexed; Bev: bevacizumab.

(a)

(b)

(c)