Table 2.

Patient Characteristics: Univariate Analysis of Predictive Factors for Resection

Categorical Variable	Total		Resected		Unresected		P
	No.	%	No.	%	No.	%
Resection status			23		26
Sex
Male	33	67	10	30	23	70	.002
Female	16	33	13	81	3	19
Previous chemotherapy
Pretreated	26	53	10	38	16	62	.26
Chemotherapy-naïve	23	47	13	57	10	43
Site of disease
Colon	42	86	21	50	21	50	.42
Rectum	7	14	2	29	5	71
Dukes' stage
B	10	20	4	40	6	60	.73
C	39	80	19	49	20	51
Time to liver metastases
Synchronous	36	73	18	50	18	50	.53
Metachronous	13	27	5	38	8	62
Clinical risk score
≥ 3	44	90	20	45	24	55	.75
0-2	5	10	3	60	2	40
Lesions
> 5	36	73	18	50	18	50	.64
1-5	13	27	5	38	8	62
Size > 5 cm	20	41	10	50	10	50	.78
Size ≤ 5 cm	29	59	13	45	16	55
Lobular involvement
Bilobar	48	98	23	48	25	52	1
Unilobar	1	2	0	0	1	100
Bordering vena cava
Yes	25	51	14	56	11	44	.26
No	24	49	9	38	15	63
Liver involvement
≥ 50	17	35	7	41	10	59	.76
< 50	32	65	16	50	16	50
All segments involved	12	24	5	42	7	58	.75
All hepatic veins involved	12	24	4	33	8	67	.33
Both portal veins involved	16	33	5	31	11	69	.14
Age, years
Median	59		53.5		61.5		.22
Range	25-77		25-71		32-77
CEA, ng/ml
Median	109.5		75.5		229.3		.08
Range	3.2-5,340.4		3.2-1,308		5.7-5,340.4
LDH, Units/L
Median	247		263		215		.57
Range	94-1,021		94-1020		126-1,021

Abbreviations: CEA, carcinoembryonic antigen; LDH, lactate dehydrogenase.