Table 1: Patient characteristics and univariate analysis for overall  (OS) and event-free survival  (EFS)  ( ).

VariableNo. of patients  (%)5-year OS (%) 5-year EFS  (%)

Age, years
Primary tumor site
Primary tumor site
Tumor size
 <8 cm
 ≥8 cm
Treatment era
LC modality
 S + RT
IE chemotherapy
Histopathologic response to chemotherapy
 <95% necrosis
 ≥95% necrosis
Surgical margins
RT dose  (cGy) (definitive RT only)

Statistically significant.