borderline significantp = 0.054
However, within the group of patients treated with IMRT/VMAT, HR in the range V40-V55 were significant (V40: 1.083, 95%CI: 1.010–1.202; V45: 1.098, 95%CI: 1.019–1.219; V50: 1.101, 95%CI: 1.022–1.204; V55: 1.096, 95%CI: 1.013–1.221), while V60 was borderline significant (HR: 1.119, 95%CI: 0.992–1.257, p = 0.054).