Table 2.
Tumour and patient related factors.
| Certified | Noncertified | p | |
|---|---|---|---|
| Age (mean in years) | 68.3 | 68.7 | 0.17∗ |
| ASA I (%) | 8.1 | 6.9 | 0.069∗∗ |
| ASA II (%) | 53.0 | 49.1 | 0.0025∗∗ |
| ASA III (%) | 36.2 | 40.4 | 0.0002∗∗ |
| ASA IV (%) | 2.2 | 2.7 | 0.29∗∗ |
| Min. 1 risk factor (%) | 76.7 | 79.9 | 0.002∗∗ |
| CT (%) | 81.9 | 84.0 | 0.025∗∗ |
| Pelvic MRI (%) | 38.9 | 29.3 | <0.001∗∗ |
| Neoadjuvant treatment (%) | 41.0 | 36.5 | <0.001∗∗ |
|
| |||
| Tumour localization (cm from anal verge) | |||
| <4 cm (%) | 12.9 | 15.2 | 0.008∗∗ |
| 4–7.9 cm (%) | 29.7 | 28.8 | 0.42∗∗ |
| 8–11.9 cm (%) | 30.4 | 29.1 | 0.25∗∗ |
| 12–16 cm (%) | 26.9 | 26.8 | 0.91∗∗ |
|
| |||
| TNM classification | |||
| pTis | 4.65 | 4.35 | 0.55∗∗ |
| pT1 | 13.7 | 12.1 | 0.06∗∗ |
| pT2 | 24.8 | 24.3 | 0.69∗∗ |
| pT3 | 44.7 | 46.4 | 0.14∗∗ |
| pT4 | 9.3 | 9.7 | 0.59∗∗ |
| Missing pT | 1.6 | 2.3 | 0.034∗∗ |
| pN0 | 57.4 | 56.0 | 0.228∗∗ |
| pN1 | 20.8 | 20.9 | 0.90∗∗ |
| pN2 | 16.7 | 16.9 | 0.87∗∗ |
| pNX | 3.0 | 4.0 | 0.03∗∗ |
| Missing pN | 2.0 | 2.2 | 0.73∗∗ |
∗Mann-WhitneyU test; ∗∗Fisher's exact test.