Table 3.

Predictive factors of survival by Cox multivariate analysis.

	P value	HR	95% CI
			Inferior	Superior
MT-KRAS	0.001	2.144	1.342	3.424
N positive	0.033	2.382	1.071	5.296
ECOG 1-2	0.006	2.469	1.289	4.732
PCI	0.000
PCI 11–20 vs. PCI 1–10	0.000	6.218	3.172	12.188
PCI >20 vs. PCI 11–20	0.004	2.409	1.319	4.400
Poor grade differentiation	0.003	2.426	1.354	4.347
Mucinous type	0.106	1.476	0.902	2.368

HR: hazard ratio; 95% CI: 95% confidence interval.