Table 3. Independent prognostic factors correlating with disease free survival (DFS) in stage I–III colorectal cancer by Cox’s regression analysis.

Characteristics	HR (95% CI)	P
HER2 amplification	2.53 [1.21–5.30]	0.014
Tumor poor differentiation	1.91 [1.16–3.14]	0.011
Lymphovascular invasion	2.15 [1.34–3.44]	0.001