FIG 2.

Hazard ratios (HRs; with 95% CIs, P values, and linear least squares regression lines weighted by the inverses of site-specific CIs) for (A) disease-free survival (DFS) and (B) overall survival (OS) after preoperative (neoadjuvant) RT (RS) compared with postoperative (adjuvant) RT (SR). HRs were adjusted for age, sex, year of diagnosis, histology, type of surgery, type of applied radiation, and tumor size. Equation describes the trend line, and coefficients were tested for significant difference from 0 using t test. (*) P < .05. (†) P < .001. RT, radiotherapy