Table 2.

Potential prognostic factors for survival

Variable	(n = 38)	PFS, months	Univariablep value	OS, months	Univariablep value
Gender
Male	15 (40)	19	0.794	62	0.522
Female	24 (60)	10		35
Age
<60 years	23 (61)	19	0.057	62	0.196
≥ 60 years	15 (29)	9		35
Interval primary tumor – hepatic metastases
Synchronous	11 (28)	5	0.021	40	0.508
Metachronous	23 (59)	19		20
Number of hepatic metastases
Solitary	20 (51)	10	0.367	62	0.360
Multiple	14 (36)	16		46
Distribution metastases
Unilobar	28 (74)	13	0.684	56	0.960
Bilobar	8 (21)	18		20
Resection status
RO or R1	21 (55)	16	0.869	77	0.192
R2	15 (39)	10		20
Type of resection
Minor	24 (63)	10	0.854	18	0.321
Major	13 (34)	16		56
Primary tumour site
Intra-abdominal	22 (58)	9	0.364	19	0.099
Extra-abdominal	16 (42)	17		Not reached

PFS, progression-free survival; OS, overall survival.