Table 3.
Mean number of lymph nodes associated with age and tumor location
| No. of cases | No. of lymph nodes (mean ± SD) | |
| Age (yr) | ||
| ≤ 50 | 40 | 18.2 ± 12.6 |
| > 50 and ≤ 60 | 82 | 17.8 ± 9.5 |
| > 60 and ≤ 70 | 109 | 14.4 ± 8.0a |
| > 70 and ≤ 80 | 117 | 15.1 ± 7.2a |
| > 80 | 82 | 14.9 ± 7.4a |
| Location | ||
| Cecum/ ascending colon | 161 | 17.8 ± 7.9c |
| Transverse colon | 22 | 14.5 ± 7.0 |
| Descending colon | 15 | 19.0 ± 12.5 |
| Sigmoid colon | 167 | 14.3 ± 9.4 |
| Rectum | 69 | 13.7 ± 6.6 |
a
P = 0.002 vs age ≤ 60 years;
c
P < 0.001 and P = 0.001 vs tumors from sigmoid colon and rectum, respectively.