Patient characteristics stratified by treatment strategy
| NOM n=102 | OM n=6 | P value | |
| Age, years | 14 (9; 16) | 11 (3; 13) | 0.093 |
| Male gender, n (%) | 72 (70.6) | 2 (33.3) | 0.077 |
| OIS | 3 (3; 4) | 4 (2; 5) | 0.669 |
| ISS | 17 (16; 33) | 21 (4; 29) | 0.547 |
| TRISS 09 Ps | 0.99 (0.96; 0.99) | 0.99 (0.98; 0.99) | 0.273 |
| TTA, n (%) | 92 (90.2) | 6 (100) | 1.000 |
| Transfused, n (%) | 7 (6.9) | 1 (16.7) | 0.377 |
| Traffic incidents, n (%) | 32 (31.4) | 1 (16.7) | 0.665 |
| Fall, n (%) | 38 (37.3) | 3 (50.0) | 0.673 |
| Isolated injury, n (%) | 33 (32.4) | 3 (50.0) | 0.398 |
| Concomitant IAI, n (%) | 18 (17.6) | 1 (16.7) | 1.000 |
| Concomitant EAI, n (%) | 51 (50.0) | 2 (33.3) | 0.679 |
| Follow-up at OUH, n (%) | 43 (42.2) | 4 (66.7) | 0.224 |
| Post-traumatic HT, n (%) | 2 (2.0) | 0 (0.0) | 1.000 |
| LOS ICU, days | 2 (1; 3) | 3 (0; 18) | 0.610 |
| LOS hospital, days | 5 (3; 7) | 14 (2; 28) | 0.252 |
Values are median and interquartile when not stated otherwise.
EAI, extra-abdominal injury; HT, hypertension; IAI, intra-abdominal injury; ICU, intensive care unit; ISS, Injury Severity Score; LOS, length of stay; NOM, non-operative management; OIS, Organ Injury Scale; OM, operative management; OUH, Oslo University Hospital; TRISS 09 Ps, Trauma and Injury Severity Score 2009 revision Probability of survival; TTA, trauma team activation.