Table 3.

Univariate analysis of variables predicting outcome after hepatic metastasectomy

Variables	P-value	Hazard ratio
Age, ≤59 vs. >59 years	0.79	0.024
Gender, male vs. female	0.09	0.515
Primary tumour, renal vs. others	0.294	0.000
Synchronous vs. metachronous	1.0	0.000
Interval between primary and liver resection, <30 vs. ≥30 months	0.413	0.000
Number of metastases, 1 vs. >1	0.201	0.334
Size of metastases, ≤6 vs. >6 cm	0.048a	1.175
Extrahepatic disease, present vs. absent	0.778	0.020
Type of resection, major vs. minor	0.08	0.713
Bilobar vs. unilobar metastases	0.204	0.330
Resected margin, positive vs. negative	0.04a	1.538

^aStatistically significant.