Association between ERCC1 and TS mRNA levels and disease free survival in colorectal cancer patients receiving oxaliplatin and fluorouracil (5-FU) adjuvant chemotherapy

Table 3 Cox regression analysis for multivariate analysis

Variable	Disease free survival
	Hazard ratio	95% confidence interval	P
Tumor stage (reference category: tumor stage IIIc)			0.083
Tumor stage IIb	0.240	0.080 - 0.724	0.011
Tumor stage IIc	< 0.0001	--	0.977
Tumor stage IIIa	0.179	0.012 - 2.593	0.207

For the tumor stage IIc, the hazard ratio was so small that the 95% confidence interval could not be displayed by the software.

ISSN: 1471-230X