I'm a stage IV colorectal cancer patient with metastasis to the lungs, and I live in Italy. My oncologist would like me to begin maintenance therapy of bevacizumab and capecitabine. I'm feeling extremely skittish about quality of life issues from capecitabine. Am I correct that the progression free surviveability rate is 8 months vs 4 months with no treatment, and that overall surviveability rate has no change?