Baseline characteristics of all patients with/without advanced CKD or dialysis
| Variable | No CKD (n=4896) | CKD/dialysis (n=101) | P value |
| Age, mean±SD | 51±22 | 71±13 | <0.001 |
| Female sex, n (%) | 1342 (27) | 41 (41) | 0.005 |
| ISS, median (Q1–Q3) | 17 (13–25) | 17 (16–25) | 0.21 |
| Blunt injury type, n (%) | 4332 (88) | 99 (98) | 0.048 |
| GCS on scene <8 (n=3937), n (%) | 429 (11) | 7 (10) | 0.85 |
| Max AIS Head score >2 (n=2684), n (%) | 2025 (78) | 66 (93) | 0.001 |
| Comorbidities,* n (%) | |||
| Diabetes | 159 (3) | 17 (17) | <0.001 |
| Hypertension | 267 (5) | 20 (20) | <0.001 |
| Congestive heart failure | 39 (1) | 7 (7) | <0.001 |
| Coronary artery disease | 109 (2) | 10 (10) | <0.001 |
| Peripheral vascular disease | 27 (1) | n<5 | 0.003 |
| Cerebrovascular disease | 79 (2) | n<5 | 0.08 |
| Chronic lung disease | 70 (1) | n<5 | 0.18 |
| Dementia | 70 (1) | n<5 | 0.66 |
*Comorbidities were collected from the NSTR using available ICD-10-CA diagnostic codes.
AIS, Abbreviated Injury Score; CKD, chronic kidney disease; GCS, Glasgow Coma Scale; ISS, Injury Severity Score; NSTR, Nova Scotia Trauma Registry; Q1–Q3, Quartile 1–Quartile 3.