Demographic and clinical characteristics of the patients_
| Variables | Number | Percent | |
|---|---|---|---|
| Age (years) | < 40 | 50 | 8.6 |
| 40– 60 | 233 | 39.9 | |
| >60 | 301 | 51.5 | |
| Gender | Male | 350 | 59.9 |
| Female | 234 | 40.1 | |
| T stage | T1 | 8 | 1.4 |
| T2 | 73 | 12.5 | |
| T3 | 292 | 50.0 | |
| T4 | 201 | 34.4 | |
| Missing | 10 | 1.7 | |
| N stage | N0 | 315 | 53.9 |
| N1 | 155 | 26.5 | |
| N2 | 88 | 15.0 | |
| Missing | 26 | 4.5 | |
| TNM stage | stage I | 62 | 10.6 |
| stage II | 250 | 42.8 | |
| stage III | 248 | 42.5 | |
| Missing | 24 | 4.1 | |
| Grade | grade I | 259 | 44.3 |
| grade II | 266 | 45.5 | |
| grade III | 43 | 7.4 | |
| Missing | 16 | 2.7 | |
| Tumor size | < 5 cm | 267 | 45.7 |
| > 5cm | 277 | 47.4 | |
| Missing | 40 | 6.8 | |
| Tumor site | Right colon | 159 | 27.2 |
| Transverse colon | 58 | 9.9 | |
| Left colon | 178 | 30.5 | |
| Rectum | 189 | 32.3 | |
| Number of evaluated lymph nodes | <12 | 336 | 57.5 |
| ≥12 | 230 | 39.4 | |
| Missing | 18 | 3.1 | |
| Mean number of evaluated lymph nodes | 10.7 (+ 5.6) | ||
| Median number of evaluated lymph nodes | 10.0 | ||
Relationship between demographic and clinical characteristics of patients and number of evaluated lymph nodes (<12 versus ≥12)_
| Variables | Odd Ratio (95% CI) | ||
|---|---|---|---|
| Crude | Adjusted | ||
| Gender | Female | Reference | Reference |
| Male | 0.88 (0.61 – 1.26) | 0.849 (0.61 – 1.31) | |
| Age (Year) | <40 | Reference | Reference |
| 40–60 | 1.48 (0.82 – 2.65) | 1.17 (0.63 – 2.2) | |
| 60< | 2.31 (1.29 – 4.15) | 2.42 (1.29 – 4.53) | |
| Tumor Location | Right colon | Reference | Reference |
| Transverse colon | 1.18 (0.64 – 2.17) | 1.21 (0.62 – 2.33) | |
| Left colon | 2.15 (1.36 – 3.4) | 2.47 (1.49 – 4.09) | |
| Rectum | 2.41 (1.52 – 3.8) | 2.37 (1.42 – 3.94) | |
| Tumor | < 5 cm | Reference | Reference |
| Size | > 5 cm | 0.6 (0.41 – 0.86) | 0.72 (0.48 – 1.08) |
| T Stage | T2 | Reference | Reference |
| T3 | 0.71 (0.4 – 1.25) | 0.93 (0.5 – 1.73) | |
| T4 | 0.97 (0.54 – 1.77) | 1.62 (0.83 – 3.15) | |
| T1 | *** | *** | |
| Grade | Grade I | Reference | Reference |
| Grade II | 0.79 (0.54 – 1.14) | 0.8 (0.53 – 1.19) | |
| Grade III | 0.74 (0.37 – 1.46) | 0.84 (0.4 – 1.74) | |
Median survival in participants_
| Participants | Median Survival (months) |
|---|---|
| <12 lymph node dissected | 48 |
| ≥12 lymph node dissected | 54 |
| Total | 49 |