From: Increased risk of cerebrovascular mortality in head and neck cancer survivors aged ≥ 65 years treated with definitive radiotherapy: a population-based cohort study
Treatment
3-year (%)
5-years (%)
10-years (%)
15-years (%)
P a
P b
P c
Surgery alone
1.7
3.3
6.9
10.8
0.024
0.323
0.002
RT alone
2.1
3.8
8.1
13.3
Surgery plus RT
1.6
2.8
6.8
11.2