Table 2. Frequency distribution of anatomical sites of colorectal cancer in the patients in terms of age, sex, ethnicity, smoking history, and history of colorectal cancer in immediate relatives.
| Anatomical site of the tumor |
Rectum
N (%) |
Ascending colon
N (%) |
Descending colon
N (%) |
Sigmoid colon
N (%) |
Cecum
N (%) |
Total
N (%) |
p -value | |
| Gender | Male | 18 (30) | 4 (6.7) | 2 (3.3) | 24 (40) | 12 (20) | 60 (100) | 0.21 |
| Female | 18 (34.6) | 6 (11.5) | 8 (15.4) | 18 (34.6) | 2 (3.8) | 52 (100) | ||
| Age (years) | <40 | 12 (40) | 2 (6.7) | 2 (6.7) | 12 (40) | 2 (6.7) | 30 (100) | 0.65 |
| ≥40 | 12 (29.3) | 8 (9.8) | 8 (9.8) | 30 (36.6) | 12 (14.6) | 82 (100) | ||
| Ethnicity | Lur | 18 (23.1) | 8 (10.3) | 6 (7.7) | 40 (51.3) | 6 (7.7) | 78 (100) | 0.045 |
| Lak | 16 (47.1) | 2 (5.9) | 2 (5.9) | 6 (17.6) | 8 (23.5) | 34 (100) | ||
| Regular smoking | Yes | 10 (26.3) | 2 (5.3) | 4 (10.5) | 18 (47.4) | 4 (10.5) | 38 (100) | 0.84 |
| No | 24 (32.4) | 8 (10.8) | 4 (5.4) | 28 (37.8) | 10 (13.5) | 74 (100) | ||
| Family history of colorectal cancer in immediate relatives | Yes | 6 (27.3) | 0 (0) | 2 (9.1) | 12 (54.5) | 2 (9.1) | 22 (100) | 0.72 |
| No | 28 (31.1) | 10 (11.1) | 6 (6.7) | 34 (37.8) | 12 (13.3) | 90 (100) | ||
* Statistical test
** Level of significance: < 0.05