Table 1.
156 patient demographics
| Age <70 (n=126), n (%) | Age ≥70 (n=30), n (%) | P | |
|---|---|---|---|
| Median age (range) | 59 (28-69) | 75 (70-93) | <0.001 |
| Mean age (range) | 56.7 (28-69) | 77.7 (70-93) | <0.001 |
| Gender | |||
| Female | 49 (38.9) | 13 (43.3) | 0.655 |
| Male | 77 (61.1) | 17 (56.7) | |
| Tumour distance from anal verge (cm) | |||
| ≦5 (lower) | 75 (59.5) | 23 (76.7) | 0.001 |
| 6-10 (middle) | 48 (38.1) | 3 (10.0) | |
| 11-15 (upper) | 3 (2.4) | 4 (13.3) | |
| Distance from anal verge (cm), median (range) | 4 (0.5-15) | 4 (1-15) | 0.174 |
| Patients with a completion of CCRT | 90 (71.4) | 22 (73.3) | 0.109 |
| Interval between completion of RT and surgical intervention (number of patients), median (days) | 83 | 86 | 0.113 |
| Tumour regression grade (patients with completion of CCRT) | |||
| 0 | 29 (23.0) | 9 (30.0) | 0.759 |
| 1 | 35 (27.8) | 9 (30.0) | |
| 2 | 19 (15.1) | 3 (10.0) | |
| 3 | 7 (5.6) | 1 (3.3) | |
| ASA classification | |||
| II | 96 (76.2) | 7 (23.3) | <0.001 |
| III | 30 (23.8) | 22 (73.3) | |
| IV | 0 | 1 (3.33) | |
| Procedure | |||
| LAR | 75 (59.5) | 13 (43.3) | 0.275 |
| ISR | 48 (38.1) | 16 (53.4) | |
| APR | 3 (2.4) | 1 (3.3) | |
| Protective diverting colostomy | |||
| Yes | 16 (12.7) | 9 (30.0) | 0.041 |
| No | 110 (87.3) | 21 (70.0) | |
| Docking time (min), median (range) | 4 (3-22) | 5 (3-10) | 0.264 |
| Console time (min), median (range) | 180 (120-527) | 195 (140-368) | 0.278 |
| Operation time (min), median (range) | 280 (200-795) | 320 (230-595) | 0.187 |
| Estimated blood loss (mL), median | 100 (15-1050) | 50 (15-350) | 0.184 |
| Post-operative LOH (days), median (range) | 6 (5-30) | 7 (5-46) | 0.084 |
RT: Radiotherapy, CCRT: Concurrent chemo RT, ASA: American Society of Anesthesiologists, LAR: Low anterior resection, ISR: Intersphenteric resection, APR: Abdominoperineal resection, LOH: Length of hospital stay