Table 1.
Demographic and clinical characteristics of study sample
| Characteristic | Group; mean ± SD or no. (%) | p value | |
|---|---|---|---|
| Cases n = 19 |
Controls n = 36 |
||
| Age, yr | 53.1 ± 14.3 | 56.5 ± 15.9 | 0.42 |
| Sex | 0.54 | ||
| Male | 15 (79) | 25 (69) | |
| Female | 4 (21) | 11 (31) | |
| ISS | 31.4 ± 9.6 | 29.3 ± 8,1 | 0.48 |
| Intubated on arrival to ED | > 0.99 | ||
| Yes | 4 (21) | 7 (19) | |
| No | 15 (79) | 29 (81) | |
| Maximum AIS score | |||
| Head and neck | 2.8 ± 1.0 | 3.21 ± 0.97 | 0.37 |
| Face | 1.4 ± 0.55 | 1.6 ±0.79 | 0.85 |
| Chest | 4.3 ± 0.56 | 4.1 ± 0.46 | 0.27 |
| Abdomen and pelvic contents | 2.5 ± 0.71 | 2.5 ± 0.79 | 0.93 |
| Extremities and pelvic girdle | 2.7 ± 0.60 | 2.4 ± 0.63 | 0.16 |
| External | 1.0 ± 0.0 | 1.0 ± 0.22 | 0.53 |
| Pulmonary contusion | < 0.001 | ||
| Present | 19 (100) | 21 (58) | |
| Absent | 0 (0) | 15 (42) | |
AIS = abbreviated injury scale; ED = emergency department; ISS = injury severity score; SD = standard deviation.