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. 2023 Feb 23;13(2):e062619. doi: 10.1136/bmjopen-2022-062619

Table 1.

Characteristics by the nine age groups and three levels of injury severity groups

Variables Overall
n=117 199
Age 0–4
n=1095
Age 5–14
n=4079
Age 15–24
n=10 743
Age 25–34
n=7919
Age 35–44
n=9952
Age 45–54
n=12 188
Age 55–64
n=13 931
Age 65–74
n=20 044
Age≥75
n=36 248
Age, years 64 (41–78) 2 (1–3) 10 (7–12) 20 (17–22) 29 (27–32) 40 (38–42) 49 (47–52) 60 (57–62) 69 (67–72) 83 (79–87)
Male 73 680 (63) 675 (62) 2985 (73) 8095 (75) 6008 (75) 7710 (77) 9211 (76) 10 017 (72) 12 662 (63) 16 317 (44)
Mechanism of injury
Blunt 113 435 (97) 1073 (98) 4020 (99) 10 477 (98) 7508 (95) 9361 (94) 11 475 (94) 13 383 (96) 19 433 (97) 36 705 (99)
Injury region
Head injury with AIS ≥3 36 244 (31) 439 (40) 1213 (30) 2798 (26) 1933 (24) 2527 (25) 3363 (28) 4451 (32) 7384 (37) 12 136 (33)
Facial injury with AIS ≥3 940 (0.8) 4 (0.4) 33 (0.8) 150 (1.4) 109 (1.4) 128 (1.3) 124 (1.0) 123 (0.9) 133 (0.7) 136 (0.4)
Neck injury with AIS ≥3 478 (0.4) 6 (0.6) 2 (0.1) 27 (0.3) 39 (0.5) 55 (0.6) 70 (0.6) 77 (0.6) 110 (0.6) 92 (0.3)
Chest injury with AIS ≥3 25 723 (22) 148 (14) 622 (15) 2831 (26) 2110 (27) 2759 (28) 3485 (29) 3726 (27) 4594 (23) 5448 (15)
Abdominal and pelvic injury with AIS ≥3 5407 (5) 27 (2) 185 (5) 805 (7) 591 (7) 682 (7) 709 (6) 684 (5) 831 (4) 893 (2)
Spinal injury with AIS ≥3 13 146 (10) 12 (1) 128 (3) 861 (8) 788 (10) 1120 (11) 1530 (13) 2106 (15) 3053 (15) 3548 (10)
Upper extremity injury with AIS ≥3 6562 (6) 57 (5) 590 (14) 581 (5) 522 (7) 711 (7) 849 (7) 798 (6) 1026 (5) 1428 (4)
Lower extremity injury with AIS ≥3 31 526 (27) 124 (11) 634 (16) 2143 (20) 1660 (21) 2055 (21) 2404 (20) 2691 (19) 4358 (22) 15 457 (42)
Injury Severity Score 10 (9–19) 9 (4–16) 9 (5–16) 10 (5–19) 10 (6–20) 13 (9–20) 13 (9–21) 14 (9–21) 14 (9–21) 9 (9–17)
Actual in-hospital mortality 7201 (6.1) 23 (2.1) 48 (1.2) 354 (3.3) 310 (3.9) 372 (3.7) 533 (4.4) 762 (5.5) 1438 (7.2) 3361 (9.0)
Injury Severity Score ≥16 48 028 (41) 376 (34) 1166 (29) 3878 (36) 3043 (38) 4076 (41) 5297 (43) 6541 (47) 9711 (48) 13 940 (37)
Injury Severity Score ≥18 32 225 (28) 187 (17) 747 (18) 2954 (28) 2305 (29) 2985 (30) 3793 (31) 4372 (31) 6256 (31) 8626 (23)
Injury Severity Score ≥26 15 343 (13) 62 (6) 367 (9) 1595 (15) 1129 (14) 1481 (15) 1823 (15) 2038 (15) 2910 (15) 3938 (11)

Data are presented as number (percentage) or median (IQR Q1–Q3).

AIS, Abbreviated Injury Scale.