Table 1 Cohort baseline characteristics
| Â | No. (%) |
|---|---|
Total Surgeries | 38,541 |
Female Sex | 14,949 (39) |
Age, years (median, IQR) | 64 (53, 73) |
Surgery Type | |
 Arteriovenous fistula | 9,889 (26) |
 Head & Neck | 596 (2) |
 Intra-abdominal | 1,737 (5) |
 Kidney Transplant | 1,805 (5) |
 Musculoskeletal | 2,083 (5) |
 Neurosurgery | 306 (0.8) |
 Peritoneal Dialysis Catheter | 4,014 (10) |
 Skin & Soft Tissue | 5,336 (14) |
 Vascular | 7,952 (21) |
 Low-risk Other | 3,925 (10) |
 More than one | 898 (2) |
Surgery Setting | |
 Ambulatory | 28,624 (74) |
 Major Elective | 3,701 (10) |
 Major Urgent/Emergent | 6,216 (16) |
Kidney Failure Type | |
 Non-dialysis | 9,781 (25) |
 Hemodialysis | 25,706 (67) |
 Peritoneal Dialysis | 3,054 (8) |
Comorbidities | |
 Cancer | 3,282 (9) |
 Cerebrovascular Disease | 25,068 (65) |
 Chronic pulmonary disease | 24,797 (64) |
 Dementia | 2,399 (6) |
 Diabetes | 25,424 (66) |
 Heart Failure | 18,002 (47) |
 History of Myocardial Infarction | 4,879 (13) |
 Hypertension | 36,958 (96) |
 Liver disease | 893 (2) |
 Obesity | 9,186 (24) |
 Peripheral Vascular Disease | 14,142 (37) |
Serum Hemoglobin, g/L (IQR) | 109 (100, 118) |
 Missing, imputed | 78 (0.2) |
Serum Albumin, g/L (IQR) | 35 (31, 38) |
 Missing, imputed | 5,589 (15) |