Survival situation All patients wer

Survival situation
All patients were followed up except 7 patients were
lost, the mean follow-up time was 46 months (range
from 9 to 136 months). In group1, 2, and 3, the two-year
DFS of them were 82.1%, 77.6%, and 87.5%, there were
no statistical differences among them (P=0.832); in the
same way, the five-year DFS were 78.3%, 75.1%, and
80.9% (P=0.762), the five-year OS were 81.4%, 78.2%,
and 81.1% (P=0.951). The five-year OS of 166 patients
receiving postoperative adjuvant therapy among three
groups were 72.4%, 69.5%, and 71.8%, respectively, there
were no statistical differences among them (P=0.698)