Table 3.

Cox-hazard regression analysis results.

OS
Variable		HR (95%CI)	p-value
KRAS mutational status and sidedness	Right colon/KRAS mutated		Ref
	Right colon/KRAS WT	0.98 (0.26 ÷ 3.62)	0.98
	Left colon/KRAS mutated	1.35 (0.59 ÷ 3.06)	0.46
	Left colon/KRAS WT	0.87 (0.32 ÷ 2.31)	0.78
PFS
	Right colon/KRAS mutated		Ref
	Right colon/KRAS WT	1.23 (0.33 ÷ 4.65)	0.75
	Left colon/KRAS mutated	1.75 (0.57 ÷ 0.72)	0.21
	Left colon/KRAS WT	2.58 (0.96 ÷ 6.92)	0.05

Bold values denote statistical significance at the p < 0.05 level.