Table 2 Operative variables of patients with and without postoperative delirium
From: Machine learning-based prediction model for postoperative delirium in non-cardiac surgery
No delirium (N = 200,509) | Delirium (N = 2,865) | p value | |
|---|---|---|---|
General anesthesia | 173,540 (86.5) | 2599 (90.7) | < 0.001 |
Emergency operation | 13,765 (6.9) | 648 (22.6) | < 0.001 |
Operation duration, min | 130.4 (± 98.6) | 233.3 (± 174.5) | < 0.001 |
Surgical risk | < 0.001 | ||
Mild | 78,787 (39.3) | 414 (14.5) | |
Intermediate | 110,034 (54.9) | 1696 (59.2) | |
High | 11,688 (5.8) | 755 (26.4) | |
Surgery types | |||
Neuroendocrine | 13,050 (6.5) | 21 (0.7) | < 0.001 |
Lung | 11,743 (5.9) | 324 (11.3) | < 0.001 |
Head & Neck | 30,491 (15.2) | 514 (17.9) | < 0.001 |
Breast | 17,629 (8.8) | 37 (1.3) | < 0.001 |
Stomach | 12,492 (6.2) | 99 (3.5) | < 0.001 |
Hepatobiliary | 16,697 (8.3) | 499 (17.4) | 0.97 |
Colorectal | 13,635 (6.8) | 283 (9.9) | 0.32 |
Urology | 18,431 (9.2) | 159 (5.5) | < 0.001 |
Gynecology | 24,487 (12.2) | 43 (1.5) | < 0.001 |
Bone & Skin etc. | 41,854 (20.9) | 886 (30.9) | < 0.001 |