Radiation Therapy in Addition to Gross Total Resection of Retroperitoneal Sarcoma Results in Prolonged Survival: Results from a Single Institutional Study

Table 3

Cox regression multivariate analysis when controlled for pre- versus postoperative treatment.

	Locoregional control	Distant disease free survival	Overall survival
Age	P = .98	P = .79	P = .81
Gender	P = .76	P = .12	P = .72
Stage	P = .95	P = .21	P = .99
Grade	P = .81	P = .57	P = .93
Tumor size	P = .76	P = .46	P = .96
Primary versus recurrent	P = .60	P = .27	P = .65
Histology	P = .70	P = .53	P = .92
GTR/STR	P = .55	P = .41	P = .77
IORT	P = .55	P = .42	P = .76
Chemo	P = .83	P = .39	P = .77
EBRT dose	P = .79	P = .28	P = .60
Organ resected	P = .85	P = .34	P = .66

GTR = gross total resection; STR = subtotal resection; IORT = intraoperative radiation therapy; EBRT = external beam radiation therapy.