Transport time | P value | |||
Total (n=879) | ≤1 hour (n=401) | >1 hour (n=478) | ||
Mean (SD) age at survey (years) | 34.0 (6.4) | 34.4 (6.3) | 33.7 (6.5) | 0.10 |
Mean (SD) time from injury to survey (years) | 7.7 (3.3) | 8.0 (3.1) | 7.6 (3.4) | 0.06 |
Male, no (%) | 856 (97.4) | 388 (96.8) | 468 (97.9) | 0.29 |
Rank, no (%)* | 0.24 | |||
Enlisted | 783 (92.7) | 364 (94.3) | 419 (91.3) | |
Officer | 62 (7.3) | 22 (5.7) | 40 (8.7) | |
Service branch, no (%) | 0.05 | |||
Army | 365 (41.5) | 182 (45.4) | 183 (38.3) | |
Air Force | 7 (<1) | 1 (<1) | 6 (1.3) | |
Marine Corps | 460 (52.3) | 201 (50.1) | 259 (54.2) | |
Navy | 47 (5.3) | 17 (4.2) | 30 (6.3) | |
Ethnicity/race, no (%)† | 0.06 | |||
White | 666 (77.5) | 297 (76.7) | 369 (78.2) | |
Hispanic/Latino | 110 (12.8) | 45 (11.6) | 65 (13.8) | |
Black/African American | 47 (5.5) | 27 (7.0) | 20 (4.2) | |
Other/unknown | 36 (4.2) | 18 (4.6) | 18 (3.8) | |
Injury mechanism, no (%)‡ | 0.003 | |||
Blast | 743 (84.6) | 328 (81.8) | 415 (87.0) | |
Gunshot wound/bullet | 91 (10.4) | 57 (14.2) | 34 (7.1) | |
Other | 44 (5.0) | 16 (4.0) | 28 (5.9) | |
Injury Severity Score, no (%) | <0.001 | |||
1–8 | 681 (77.5) | 269 (67.1) | 412 (86.2) | |
9+ | 198 (22.5) | 132 (32.9) | 66 (13.8) |
Note: Because of rounding, percentages may not total 100.
*n=845; missing data for 34 participants were excluded from analysis.
†n=859; missing data for 20 participants were excluded from analysis.
‡n=878; missing data for 1 participant was excluded from analysis.