Additional file 2: of EP3 (prostaglandin E2 receptor 3) expression is a prognostic factor for progression-free and overall survival in sporadic breast cancer

Figure S2. Schoenfeld residuals for EP3. To test for PH assumption, Schoenfeld residual test was performed for EP3 for OS and PFS. Schoenfeld residuals for EP3 are displayed (left: OS, right: PFS). There is no violation of PH assumption, as the ratio of both curves is stable over the time. (PDF 20 kb)