Table 3.
Logistic regression analysis of predictors of high surgical difficulty in LaTME for LARC following NCRT
| Factors | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
| OR (95% CI) | P value | OR (95% CI) | P value | |
| Age | 0.957 (0.918–0.998) | 0.041 | 0.935 (0.872–1.003) | 0.062 |
| BMI | 1.416 (1.160–1.728) | 0.001 | 1.333 (0.999–1.779) | 0.051 |
| Distance from the anal verge | 0.719 (0.543–0.952) | 0.021 | 0.619 (0.409–0.938) | 0.024 |
| Previous abdominal surgery | 3.486 (0.814–14.934) | 0.093 | ||
| Tumor diameter | 2.975 (1.761–5.028) | < 0.001 | 3.747 (1.538–9.129) | 0.004 |
| Time interval from completion of radiation to surgery | 0.917 (0.650–1.295) | 0.624 | ||
| Pelvic inlet length | 1.265 (0.777–2.059) | 0.345 | ||
| Pubic tubercle height | 1.142 (0.297–4.399) | 0.847 | ||
| Pelvic outlet length | 1.443 (0.722–2.886) | 0.299 | ||
| Sacral length | 0.959 (0.629–1.464) | 0.848 | ||
| Sacral depth | 0.651 (0.238–1.775) | 0.401 | ||
| Pelvic depth | 1.499 (0.842–2.669) | 0.169 | ||
| Interspinous distance | 0.421 (0.208–0.852) | 0.016 | 0.127 (0.028–0.564) | 0.007 |
| Angle α | 0.917 (0.858–0.979) | 0.010 | 0.821 (0.681–0.990) | 0.039 |
| Angle β | 1.070 (0.993–1.153) | 0.075 | ||
| Angle γ | 1.082 (1.019–1.149) | 0.010 | 0.938 (0.807–1.090) | 0.404 |
| Angle δ | 0.960 (0.910–1.014) | 0.142 | ||
| Mesorectal area | 1.093 (1.003–1.191) | 0.043 | 0.833 (0.598–1.161) | 0.281 |
| Rectal area | 1.038 (0.899–1.197) | 0.612 | ||
| Mesorectal fat area | 1.103 (1.001–1.215) | 0.049 | 1.469 (0.978–2.206) | 0.064 |
LaTME Laparoscopic total mesorectal excision, LARC locally advanced rectal cancer, NCRT neoadjuvant chemoradiotherapy, OR odds ratio, CI confidence interval, BMI body mass index