Table II.
Demographics of Initial Patient Dataset for Model Creation of Cross-Validation
| Statistic | N | Mean | Std. Dev. | Min | Max |
|---|---|---|---|---|---|
| Age | 227 | 24.623 | 4.883 | 19.200 | 47.200 |
| Transfemoral amputation (binary, 0 = no, 1 = yes) | 227 | 0.463 | 0.500 | 0 | 1 |
| Marine status (binary, 0 = not a marine, 1 = a marine) | 224 | 0.585 | 0.494 | 0 | 1 |
| Genitourinary injury (binary, 0 = no, 1 = yes) | 227 | 0.485 | 0.501 | 0 | 1 |
| Theater colostomy (binary, 0 = no, 1 = yes) | 225 | 0.169 | 0.375 | 0 | 1 |
| White blood cell count (cells/ml3) | 224 | 8.396 | 2.753 | 1.800 | 19.700 |
| ISS | 227 | 21.233 | 8.346 | 4 | 50 |
| MEDCEN shock index | 226 | 0.811 | 0.190 | 0.061 | 1.558 |
| Pelvis injury (binary, 0 = no, 1 = yes) | 227 | 0.308 | 0.463 | 0 | 1 |
| Penetrating abdomen injury (binary, 0 = no, 1 = yes) | 227 | 0.141 | 0.349 | 0 | 1 |
| Rectal injury (binary, 0 = no, 1 = yes) | 227 | 0.115 | 0.319 | 0 | 1 |
| SOFA score | 226 | 6.049 | 3.975 | 0 | 19 |
| Theater base deficit | 186 | 6.430 | 5.652 | 0 | 27 |
| Theater whole blood and PRBC (Units) | 227 | 18.432 | 18.336 | 0 | 126 |
| Theater shock index | 197 | 1.068 | 0.469 | 0.418 | 3.120 |
ISS = Injury severity score.