Table 3 Responder and non-responder comparison
| Â | Â | Non-responder | Responder | Â | ||
|---|---|---|---|---|---|---|
Number (%)/median (IQR)/mean (SD) | Number (%)/median (IQR)/mean (SD) | p value | ||||
Total | Â | 2072 | 941 | Â | ||
Demographics | Age | 54.1 | (22.5) | 59.2 | (20.7) | <  0.001 |
Males | 1467 | (71%) | 671 | (0.71%) | 0.777 | |
Injury scores | Injury Severity Score (ISS) | 21 | (17, 26) | 21 | (17, 26) | 0.135 |
New Injury Severity Score (NISS) | 27 | (21, 34) | 27 | (22, 34) | 0.056 | |
Revised Trauma Score (RTS) | 7.84 | (2.63, 7.84) | 7.84 | (3.80, 7.84) | 0.006 | |
Charlson comorbidity score | 0 | 1595 | (77%) | 692 | (74%) | 0.017 |
1 | 331 | (16%) | 159 | (17%) | Â | |
2 | 104 | (5%) | 62 | (7%) | Â | |
> 2 | 42 | (2%) | 28 | (3%) |  | |
Citizenship | Singapore citizen/permanent resident | 1536 | (74%) | 808 | (86%) | <  0.001 |
Mechanism of injury | Low fall | 799 | (39%) | 443 | (47%) | <  0.001 |
High fall | 307 | (15%) | 119 | (13%) | 0.113 | |
Pedestrian | 78 | (4%) | 31 | (3%) | 0.522 | |
Cyclist | 0 | Â | 31 | (3%) | Â | |
Motorcycle | 424 | (20%) | 151 | (16%) | 0.004 | |
Motor vehicle | 112 | (5%) | 46 | (5%) | 0.555 | |
Road traffic injury | 0 | Â | 228 | (24%) | Â | |
Injury region | Head and neck | 1512 | (73%) | 722 | (77%) | 0.029 |
Face | 38 | (2%) | 20 | (2%) | 0.59 | |
Chest | 595 | (29%) | 231 | (25%) | 0.018 | |
Abdomen and pelvic contents | 274 | (13%) | 90 | (10%) | 0.004 | |
Extremities and pelvic girdle | 375 | (18%) | 152 | (16%) | 0.193 | |
External | 3 | (0.1%) | 0 |  | – | |
Polytrauma | 615 | (30%) | 234 | (25%) | 0.007 | |