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 8

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

(a)

(b)

(c)