Impact of postoperative daily image-guided intensity-modulated radiotherapy on overall and local progression-free survival in patients with oral cavity cancer

Table 2 The actuarial 5-year overall survival, disease-free survival, locoregional progression-free survival, local progression-free survival, regional progression-free survival and metastasis-free survival rates in the intensity-modulated radiotherapy-treated and helical tomotherapy-treated groups

Survival rate	IMRT (non-IGRT)	HT (IGRT)	95 % CI	p value
5-year OS	47.5 %	86.7 %	0.53 to 0.64	0.015
5-year DFS	39.3 %	73.8 %	0.40 to 0.74	0.146
5-year LRPFS	49.8 %	69.8 %	0.37 to 0.77	0.104
5-year LPFS	58.4 %	85.2 %	0.58 to 0.70	0.006
5-year RPFS	81.2 %	81.4 %	0.62 to 0.72	0.653
5-year MFS	82.6 %	80.1 %	0.62 to 0.72	0.892

Abbreviations: DFS disease-free survival, HT helical tomotherapy, IGRT image-guided radiotherapy, IMRT intensity-modulated radiotherapy, MFS metastasis-free survival, non-IGRT non-image-guided radiotherapy, LRPFS locoregional progression-free survival, LPFS local progression-free survival, OS overall survival, RPFS regional progression-free survival

ISSN: 1471-2407