Table 1.
Patient characteristics (n=204)
| Variables | N (%) or mean (±SD) |
|---|---|
| Age (continuous) (years) | 84 (±4) |
| Age (binary) | |
| 80–89 years old | 181 (89%) |
| 90–99 years old | 23 (11%) |
| Sex | |
| Male | 100 (49%) |
| Body mass index (kg/m2) | 23 (±4) |
| ASA score (≥3) | 52 (25%) |
| Comorbidity | |
| Diabetes | 42 (21%) |
| Cardiac disease | 123 (60%) |
| Pulmonary disease | 31 (15%) |
| Kidney disease | 2 (1%) |
| Liver disease | 5 (2%) |
| Two or more comorbidities | 55 (27%) |
| Preoperative chemoradiation (+) | 8 (4%) |
| Tumor location | |
| Colon | 110 (54%) |
| Rectum | 94 (46%) |
| Types of operation | |
| Abdominoperineal resection, Hartmann | 24 (12%) |
| Low anterior resection | 75 (37%) |
| Left colectomy | 48 (24%) |
| Subtotal colectomy | 5 (2%) |
| Right colectomy | 47 (23%) |
| Other | 5 (2%) |
| Surgical approach | |
| Open surgery | 80 (39%) |
| Laparoscopy | 124 (61%) |
| Conversion to open surgery (+) | 10 (8.1%) |
| Metastasectomy (−) and organs | |
| Liver | 9 (4.4%) |
| Lung | 5 (2.5%) |
| Peritoneum | 3 (1.5%) |
| Bone | 2 (1.0%) |
| Lung, liver, and bone | 1 (0.5%) |
| Metastasectomy (+) and organs | |
| Liver | 6 (2.9%) |
| Vagina wall | 2 (1.0%) |
| Bladder | 1 (0.5%) |
Abbreviations: SD, standard deviation; ASA, American Society of Anesthesiologists.