Patientcharacteristics, pre-ERAS and post-ERAS implementation
| Covariate | Preimplementation (N=1063) | Postimplementation (N=1318) | P value |
| Age group | 0.0500 | ||
| ≤45 years | 302 (28.4) | 380 (28.8) | |
| 46–65 years | 538 (50.6) | 611 (46.4) | |
| >65 years | 223 (21.0) | 327 (24.8) | |
| Procedure day | 0.033 | ||
| Weekdays | 1021 (96.0) | 1286 (97.6) | |
| Weekends | 42 (4.0) | 32 (2.4) | |
| Procedure type | 0.009 | ||
| Minimally invasive | 953 (89.6) | 1135 (86.1) | |
| Open | 110 (10.4) | 183 (13.9) | |
| ASA category | <0.0001 | ||
| Healthy | 92 (8.7) | 89 (6.7) | |
| Mild | 713 (67.1) | 788 (59.8) | |
| Sever | 189 (17.8) | 255 (19.4) | |
| Missing | 69 (6.5) | 186 (14.1) | |
| BMI category | 0.9396 | ||
| Normal (18.5 to <25) | 332 (31.2) | 408 (31.0) | |
| Overweight (25 to <30) | 307 (28.9) | 375 (28.5) | |
| Obese (≥30) | 424 (39.9) | 535 (40.6) |
ASA, American Society of Anesthesia; BMI, body mass index; ERAS, enhanced recovery after surgery.