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Patient characteristics
| ERP (n = 96) | Control (n = 84) | p value | |
|---|---|---|---|
| Age | 72 (31–94) | 72 (46–92) | 0.30 |
| Sex (male/female) | 51/45 | 50/34 | 0.39 |
| Chronic pulmonary disease | 9 (9.4%) | 7 (8.3%) | 0.81 |
| Chronic heart disease | 17 (17.7%) | 15 (17.6%) | 0.98 |
| Previous stroke | 7 (7.3%) | 4 (4.8%) | 0.546 |
| Diabetes mellitus | 15 (15.6%) | 18 (21.4%) | 0.32 |
| High anesthetic risk | 13 (15.6%) | 16 (19%) | 0.2 |
| Previous abdominal surgery | 21 (21.9%) | 14 (16.7%) | 0.378 |
| Advanced cancer stage | 42 (43.8%) | 41 (48.8%) | 0.50 |
