Group name
NS group
Groups definition
A multistage nerve-sparing (NS) grade method that involved four approaches to nerve-preservation,as described previously,was used for function preservation and tumour control in all patients
T0
0 (0.0%)
T2
154 (90.6%)
T3a
32 (18.8%)
>T3b
1 (0.6%
N0
153 (90.0%)
≥N1
1 (0.6%)