Table 1 Demographic data of patients (≥80 years) and controls (<80 years)
Group 1 | Group 2 | P-value | |
|---|---|---|---|
Age <80 years | Age ≥80 years | ||
n =572 | n =55 | ||
Gender | 0.071 | ||
Female | 220 (38) | 28 (51) | |
Male | 352 (62) | 27 (49) | |
Co-morbidities | |||
Cardiovascular diseases | 250 (44) | 36 (65) | 0.002 |
Pulmonary diseases | 63 (11) | 13 (24) | 0.006 |
Neurological diseases | 34 (6) | 6 (11) | 0.149 |
Diabetes mellitus | 84 (15) | 9 (16) | 0.738 |
Tumor localizations | 0.432 | ||
Upper rectum (12 to 16 cm) | 107 (19) | 7 (13) | |
Middle rectum (6 to 12 cm) | 220 (39) | 25 (46) | |
Lower rectum (≤6 cm) | 241 (42) | 22 (41) | |
UICC-criteria | 0.109 | ||
I | 174 (31) | 21 (41) | |
II | 117 (21) | 10 (20) | |
III | 156 (28) | 14 (27) | |
IV | 109 (20) | 6 (12) | |
Operative access | 0.0004 | ||
Open | 511 (90) | 44 (80) | |
Laparoscopic | 44 (7) | 3 (5) | |
Transanal | 15 (3) | 8 (15) | |
Operation techniques | < 0.0001 | ||
Low anterior resection | 374 (65) | 28 (51) | |
Rectum extirpation | 65 (11) | 6 (11) | |
Intersphincteric resection | 42 (7) | 1 (2) | |
Transanal endoscopic microsurgery | 14 (3) | 8 (14) | |
Hartmann’s procedure | 15 (3) | 7 (13) | |
Complete rectal resection | 48 (8) | 4 (7) | |
Others | 14 (3) | 1 (2) | |
Stomas | 0.024 | ||
Colostoma | 121 (21) | 18 (33) | |
Ileostoma | 259 (45) | 15 (27) | |
No stoma | 190 (33) | 22 (40) | |
Preoperative therapies | 0.005 | ||
No therapy | 253 (44) | 37 (67) | |
Chemo or radio/chemotherapy | 125 (22) | 7 (13) | |
Radiotherapy | 194 (44) | 11 (20) |