Table 1.
Patient and pretreatment characteristics
| Number of Patients (N = 827) | ||
|---|---|---|
| Age Group | ||
|
| ||
| < 50 years | 227 | 27.40% |
| 50 - 60 years | 215 | 26.00% |
| 60 -70 years | 213 | 25.80% |
| 70 - 80 years | 145 | 17.50% |
| > 80 years | 27 | 3.30% |
|
| ||
| Gender | ||
|
| ||
| Male | 484 | 58.50% |
| Female | 343 | 41.50% |
|
| ||
| Year | ||
|
| ||
| 1998-2002 | 204 | 24.70% |
| 2003-2005 | 258 | 31.20% |
| 2006-2008 | 121 | 14.60% |
| 2009-2011 | 244 | 29.50% |
|
| ||
| Type of Resection | ||
|
| ||
| Low Anterior Resection | 677 | 81.90% |
| Abdominoperineal resection | 150 | 18.10% |
|
| ||
| Distance to the Anal Verge | ||
|
| ||
| <4 cm | 146 | 17.70% |
| 4 - 6 cm | 218 | 26.40% |
| 6 - 8 cm | 247 | 29.90% |
| 8 - 10 cm | 157 | 19.00% |
| >10 cm | 59 | 7.10% |
|
| ||
| Grade | ||
|
| ||
| Well Differentiated | 18 | 2.20% |
| Moderately Differentiated | 733 | 88.60% |
| Poorly Differentiated | 70 | 8.50% |
| Unknown | 6 | 0.70% |
|
| ||
| Clinical Tumor Stage | ||
|
| ||
| cT1 | 7 | 0.80% |
| cT2 | 63 | 7.60% |
| cT3 | 727 | 87.90% |
| cT4 | 30 | 3.60% |
|
| ||
| Clinical N Stage | ||
|
| ||
| cN0 | 210 | 25.40% |
| cN+ | 617 | 74.60% |