TABLE 1.
Demographics, injury circumstances, and trauma characteristics of combat-injured U.S. service members (2009-2011)
| Characteristica | Results for: |
P value | |
|---|---|---|---|
| IFIb: case patients (n = 54) | Non-IFI: control patients (n = 69) | ||
| Demographics | |||
| Age (median [IQR]) | 22.9 (21.7−26.2) | 23.2 (21.3−25.2) | 0.85 |
| Male (no. [%]) | 54 (100) | 68 (99) | 1.00 |
| Injury circumstances (no. [%]) | |||
| BLAST injury | 54 (100) | 69 (100) | |
| Foot patrol | 50 (93) | 61 (88) | 1.00 |
| LRMC ISS (median [IQR])c | 21 (18−25) | 21 (17−24) | 0.43 |
| Traumatic amputations (no. [%]) | |||
| Lower extremity | 46 (85) | 59 (86) | 1.00 |
| Above/through the knee | 42 (78) | 55 (80) | 0.80 |
| Below the knee | 4 (7) | 4 (6) | 0.73 |
| Upper extremity | 8 (15) | 4 (6) | 0.13 |
| Both lower/upper extremity | 7 (13) | 3 (4) | 0.10 |
| Fractures (no. [%]) | 0.87 | ||
| None | 13 (24) | 14 (20) | |
| Closed | 5 (9) | 6 (9) | |
| Open ± closed | 36 (67) | 49 (71) | |
| Blood productsd transfused within first 24 h (no. [%]) | 0.50 | ||
| <10 units | 2 (4) | 4 (6) | |
| 10−20 units | 17 (31) | 28 (40) | |
| >20 units | 35 (65) | 37 (54) | |
| Shock index (no. [%])e | 0.36 | ||
| <1 | 16 (30) | 20 (29) | |
| 1−1.49 | 17 (31) | 28 (40) | |
| ≥1.5 | 35 (65) | 37 (54) | |
| Admittance to LRMC ICU | 53 (98) | 64 (93) | 0.23 |
| Admittance to U.S. MTF ICU | 52 (96) | 59 (86) | 0.07 |
a
ICU, intensive care unit; IQR, interquartile range; ISS, injury severity score; LRMC, Landstuhl Regional Medical Center; MTF, military treatment facility.
b
IFI, invasive fungal wound infection.
c
Wounded U.S. military personnel are evacuated from the combat zone to the LRMC, the U.S. military hospital in Germany, prior to transfer to the United States.
d
Packed red blood cells plus whole blood.
e
Shock index: heart rate/systolic blood pressure.