Colon Cancer Sidedness, Presentation, and Survival at Different Stages

Table 3

Independent predictors of overall survival (OS) for colon cancer.

Characteristics	Adjusted HR (95% Confidence Interval)	P-value
Male	1.18 (1.16-0.1.20)	<0.001
Race
Hispanic (ref)
Black	1.15 (1.11-1.20)	<0.001
White	1.06 (1.02-1.09)	<0.001
Others	0.89 (0.85-0.92)	<0.001
Age
<50 (ref)
50-69	1.26 (1.22-1.30)	<0.001
70-89	2.60 (2.47-2.64)	<0.001
Insurance
Insured (ref)
Medicaid	1.39 (1.36-1.43)	<0.001
Insured/no specifics	1.14 (1.11-1.16)	<0.001
Uninsured	1.31 (1.25-1.37)	<0.001
Unknown	1.06 (1.00-1.13)	0.062
Marital status
Married (ref)
Divorced	1.21 (1.18-1.25)	<0.001
Separated	1.17 (1.08-1.26)	<0.001
Single	1.29 (1.26-1.32)	<0.001
Unknown	1.12 (1.07-1.17)	<0.001
Widowed	1.38 (1.35-1.42)	<0.001
Geographic region
Northeastern (ref)
Midwestern	1.08 (1.05-1.12)	<0.001
Western	1.06 (1.03-1.08)	<0.001
Southern	1.14 (1.11-1.17)	<0.001
AJCC6th edition
Stage I (ref)
II	1.30 (1.26-1.34)	<0.001
III	2.06 (2.00-2.12)	<0.001
IV	7.88 (7.63-8.13)	<0.001
Tumor Grade
Grade I (Ref)
grade II	1.08 (1.04-1.12)	<0.001
grade III	1.47 (1.41-1.53)	<0.001
grade IV	1.58 (1.49-1.68)	<0.001
Unknown	1.18 (1.13-1.24)	<0.001
Histology
Mucinous adenocarcinoma (ref)
Adenocarcinoma NOS	0.90 (0.87-0.92)	<0.001
Signet ring cell carcinoma	1.37 (1.28-1.47)	<0.001
Adenocarcinoma in adenomatous polyps	0.74 (0.71-0.78)	<0.001
Others (papillary, adenosquamous, medullary)	0.82 (0.79-0.86)	<0.001
Treatment
No surgery (ref)
Surgery performed	0.39 (0.38-0.40)	<0.001
Laterality
Right sided (ref)
Left sided	0.87 (0.85-0.88)	<0.001

ref = reference; HR = hazard ratio.