Table 1 Descriptive characteristics of the study sample
Variable | Total No. (%) (n = 1179) | No hearing loss No. (%) (n = 1009) | Unilateral hearing loss No. (%) (n = 122) | Bilateral hearing loss No. (%) (n = 48) | p-value |
|---|---|---|---|---|---|
Age, years | Â | Â | Â | Â | 0.793 |
 18–25 | 942 (79.9) | 806 (79.9) | 96 (78.7) | 40 (83.3) |  |
 26 and older | 237 (20.1) | 203 (20.1) | 26 (21.3) | 8 (16.7) |  |
Year of injury |  |  |  |  | < 0.001 |
 2004–2006 | 765 (64.9) | 677 (67.1) | 67 (54.9) | 21 (43.8) |  |
 2007–2012 | 414 (35.1) | 332 (32.9) | 55 (45.1) | 27 (56.3) |  |
Occupation | Â | Â | Â | Â | 0.003 |
 Non-infantry | 603 (51.2) | 536 (53.1) | 46 (37.7) | 21 (43.8) |  |
 Infantry | 576 (48.9) | 473 (46.9) | 76 (62.3) | 27 (56.3) |  |
Battle injury |  |  |  |  | < 0.001 |
 No | 614 (52.1) | 557 (55.2) | 44 (36.1) | 13 (27.1) |  |
 Yes | 565 (47.9) | 452 (44.8) | 78 (63.9) | 35 (72.9) |  |
Blast injury |  |  |  |  | < 0.001 |
 No | 699 (59.3) | 631 (62.5) | 55 (45.1) | 13 (27.1) |  |
 Yes | 480 (40.7) | 378 (37.5) | 67 (54.9) | 35 (72.9) |  |
ISS | Â | Â | Â | Â | 0.647 |
 1–9 | 1115 (94.6) | 956 (94.8) | 115 (94.3) | 44 (91.7) |  |
 9 and greater | 64 (5.4) | 53 (5.3) | 7 (5.7) | 4 (8.3) |  |
Concussion | Â | Â | Â | Â | 0.002 |
 No | 870 (73.8) | 760 (75.3) | 84 (68.9) | 26 (54.2) |  |
 Yes | 309 (26.2) | 249 (24.7) | 38 (31.2) | 22 (45.8) |  |
PTSD |  |  |  |  | < 0.001 |
 No | 1056 (89.6) | 917 (90.9) | 105 (86.1) | 34 (70.8) |  |
 Yes | 123 (10.4) | 92 (9.1) | 17 (13.9) | 14 (29.2) |  |