Table 2.

Univariate and multivariate analysis of OS

Factors	Univariate analysis			Multivariate analysis
	HR	95% CI	P value	HR	95% CI	P value
Maximum diameter of left MRA	2.128	1.110–4.080	0.023
Maximum diameter of right MRA	5.182	2.102–12.779	< 0.001	5.526	2.000–15.270	0.001
Left LI-MRF	1.101	1.017–1.193	0.018
Right LI-MRF	1.140	1.065–1.220	< 0.001	1.100	1.018–1.189	0.016
Type of left MRA	0.314	0.139–0.706	0.005
Type of right MRA	0.246	0.110–0.549	0.001
BMI	1.236	1.068–1.430	0.004
CA19-9	1.002	1.001–1.003	< 0.001

MRF mesorectal fascia, MRA middle rectal artery