Table A1.

Demographics and Clinical Characteristics of Study Group

Demographic or Clinical Characteristic	% of Patients (N = 613)
Age, years
Median	62
Range	17-88
Sex
Male	54.7
Female	45.3
Tumor location
Right colon	37.4
Left colon	43.7
Rectum	18.9
Disease stage at presentation
I	9.7
II	18.1
III	23.3
IV	48.9