Analysis of cancer-specific survival in patients with metastatic colorectal cancer: A evidence-based medicine study

Table 4 Analyzes tumor-specific survival rates in patients with different risk classes, %

Variable	Low-risk group	Medium-risk group	High-risk group
	(n = 8140)	(n = 4737)	(n = 2013)
1 yr CSS	86.10	63.00	31.50
2 yr CSS	67.30	38.00	16.10
3 yr CSS	49.70	24.60	8.90
5 yr CSS	31.30	14.20	4.30
Median CSS	36 months	18 months	5 months
95%CI	34.987-37.013	17.273-18.727	4.503-5.497

CSS: Cancer-specific survival.