Table 1. Patient characteristics.

Number of patients	320
Median age at surgery (years)	72.6 (35–94)
Median disease-free survival (years)	4 (0–6.6)
Median overall survival (years)	4.2 (0–6.6)
Death	110
Cancer recurrence
No	266
Yes	54
Sex
Male	162
Female	158
Site
Colon	212
Rectum	108
Stage
1	45
2	133
3	102
4	37
Grade
Well	8
Moderate	243
Poor	69