| |
Control*
|
Case**
|
p-value
|
|---|
|
Agea
|
|
< 45
|
229 (45.8%)
|
86 (20.5%)
|
< 0.001
|
|
≥ 45
|
271 (54.2%)
|
333 (79.5%)
| |
|
Sex
|
|
Female
|
261 (52.2%)
|
200 (47.7%)
|
0.2
|
|
Male
|
239 (47.8%)
|
219 (52.3%)
| |
|
Addictionb
|
|
No
|
387 (77.4%)
|
353 (84.2%)
|
0.0115
|
|
Yes
|
113 (22.6%)
|
66 (15.8%)
| |
|
Tumor location
|
|
Colon
| |
206 (49.2%)
| |
|
Rectosigmoid
| |
213 (50.8%)
| |
- *Number of controls: 500; **number of cases: 419; Chi-squared test was used to determine the p-value; aa cut off of 45 years old was determined for age according to American Cancer Society Guidelines and US Preventive Services Task Force Recommendation Statement [19, 20]; btype of addiction = smoking (cigarette, hookah, opium)
