| Variable | Compliant Group (N = 247) | Non-compliant Group (N = 146) | p value |
| Age—mean years (SD) Missing | 58.6 (15.7) 4 | 61.7 (14.5) 1 | 0.054* |
| Female sex—no. (%) Missing | 133 (54.7) 4 | 82 (56) | 0.783 |
| ASA† Class—no. (%) | 0.243 | ||
| 1 | 14 (5.7) | 4 (3) | |
| 2 | 63 (25.6) | 36 (25) | |
| 3 | 110 (44.7) | 78 (53) | |
| 4 Missing | 59 (24.0) 1 | 28 (19) | |
| Surgical Class—no. (%) | - | ||
| Orthopedic | 79 (32.5) | 61 (42) | |
| General | 39 (16) | 24 (17) | |
| Gynecological | 24 (9.9) | 17 (12) | |
| Cardiac | 23 (9.5) | 7 (5) | |
| Urological | 23 (9.5) | 13 (9) | |
| Neurosurgical | 22 (9.1) | 5 (3) | |
| Plastic | 15 (6.2) | 6 (4) | |
| Vascular | 10 (4.1) | 5 (3) | |
| Otolaryngologic | 6 (2.5) | 6 (4) | |
| Ophthalmological | 1 (0.4) | 0 | |
| Electrophysiological Missing | 1 (0.4) 4 | 1 (1) 1 | |
| No. of days from preoperative appointment to surgery—median (IQR) | 10 (5 - 14) | 12 (7 - 14) | 0.126‡ |
| Individual collecting the list of medications—no. (%) |
|
| 0.413 |
| Physician | 32 (14.3) | 17 (12) |
|
| Pharmacist | 108 (48.2) | 77 (55) |
|
| Nurse Missing | 84 (37.5) 23 | 45 (32) 7 |
|