Patient characteristics stratified by time periods
| P1 (2003–2009) n=30 | P2 (2010–2019) n=85 | P value | |
| OIS renal injury grade | 3 (2; 4) | 4 (3; 4) | 0.022 |
| ISS | 25 (15; 42) | 17 (16; 28) | 0.302 |
| ED surgery, n (%) | 3 (10.0) | 0 (0.0) | 0.016 |
| Intubated, n (%) | 12 (40.0) | 14 (16.4) | 0.012 |
| Mortality, n (%) | 6 (20.0) | 1 (1.2) | 0.001 |
| NOM, n (%) | 28 (93.3) | 81 (95.3) | 0.650 |
| Cystoscopy with stent, n (%) | 0 (0.0) | 6 (7.1) | 0.337 |
| Angioembolization, n (%) | 1 (3.3) | 4 (4.7) | 1.000 |
| Nephrectomy, n (%) | 1 (3.3) | 3 (3.5) | 1.000 |
Intubated refers to intubated prehospital or in the emergency department. Values are median and interquartiles when not stated otherwise.
ED, emergency department; ISS, Injury Severity Score; NOM, non-operative management; OIS, Organ Injury Scale; P1, Period 1; P2, Period 2.