Table 2.
Univariate analysis of pretreatment computed tomography (CT) and clinical parameters
| Factors | P-value |
|---|---|
| Pretreatment CT parameters | |
| Maximum tumor thickness | P = 0.019 |
| Maximum tumor diameter | P = 0.181 |
| Depth of invasion of rectal wall | P = 0.913 |
| Distance between tumor rim and mesorectal fascia (D) | P = 0.991 |
| Distance between inferior tumor margin and anorectal ring (L) | P <0.0001 |
| Number of lymph nodes | P = 0.282 |
| Number of lymph nodes in Group ① | P = 0.282 |
| Number of lymph nodes in Group ② | P = 0.911 |
| Number of lymph nodes in Group ③ | P = 0.276 |
| Number of lymph nodes in Group ④ | P <0.0001 |
| Clinical parameters | |
| Distance between inferior tumor margin and anorectal ring | P = 0.027 |
| Maximum tumor diameter | P = 0.254 |
| Depth of invasion of rectal wall | P = 0.190 |
| Dukes stage | P = 0.311 |
| ypT | P = 0.799 |
| ypN | P = 0.0008 |
| ypM | P = 0.046 |
| LNM | P <0.0001 |
Footnote: ypT: yielding pathologic Tumor; ypN: yielding pathologic Node; ypM: yielding pathologic Metastasis; LNM: lymph node metastasis.