Table 3 Univariate associations of class membership with covariates pertinent to prevention efforts
Polytrauma | Brain | Abdomen | Upper limb | Lower limb | Head | |
|---|---|---|---|---|---|---|
Age group | ||||||
Infant and toddler | 5 (6%/1%) | 5 (6%/1%) | 1 (1%/0%) | 18 (21%/1%) | 27 (32%/4%) | 29 (34%/1%) |
Preschool | 13 (2%/4%) | 36 (7%/6%) | 22 (4%/3%) | 198 (37%/15%) | 63 (12%/8%) | 202 (37%/8%) |
School age | 46 (3%14%) | 116 (7%/21%) | 216 (12%/32%) | 429 (26%/33%) | 176 (10%/23%) | 698 (42%/28%) |
Teen | 274 (7%/81%) | 398 (10%/72%) | 439 (11%/65%) | 640 (17%/50%) | 495 (13%/65%) | 1605 (42%/63%) |
Sex | ||||||
Female | 52 (4%/15%) | 105 (8%/19%) | 123 (10%/18%) | 337 (26%/26%) | 143 (11%/19%) | 516 (40%/20%) |
Male | 286 (6%/85%) | 449 (9%/81%) | 555 (11%/82%) | 948 (19%/74%) | 618 (13%/81%) | 2018 (41%/80%) |
Race/ethnicity | ||||||
Black | 56 (6%/17%) | 62 (7%/11%) | 84 (9%/13%) | 142 (16%/11%) | 143 (16%/19) | 423 (46%/17%) |
Hispanic | 64 (6%/20%) | 100 (10%/18%) | 96 (9%/14%) | 242 (24%/19%) | 126 (12%/17%) | 399 (39%/16%) |
Other | 24 (5%/7%) | 52 (10%/10%) | 42 (8%/6%) | 116 (23%/10%) | 54 (11%/8%) | 219 (43%/9%) |
White | 182 (5%/56%) | 333 (9%/61%) | 442 (12%/67%) | 767 (21%/61%) | 424 (12%/57%) | 1436 (40%/58%) |
Payer | ||||||
Commercial | 168 (6%/52%) | 273 (9%/51%) | 366 (12%/55%) | 621 (21%/49%) | 364 (12%/49%) | 1214 (40%/50%) |
Low income | 156 (5%/48%) | 266 (9%/49%) | 297 (10%/45%) | 635 (21%/51%) | 381 (13%/51%) | 1225 (41%/50%) |
Helmet wear | ||||||
Yes | 48 (4%/14%) | 51 (5%/9%) | 187 (17%/28%) | 263 (24%/20%) | 137 (12%/18%) | 426 (38%/17%) |
No | 290 (6%/86%) | 504 (10%/91%) | 491 (10%/72%) | 1022 (20%/80%) | 624 (12%/82%) | 2108 42%/(83%) |
Place of injury | ||||||
Road | 295 (8%/87%) | 377 (10%/68%) | 318 (9%/47%) | 533 (15%/41%) | 494 (14%/65%) | 1603 (44%/63%) |
Off-road | 20 (3%/6%) | 55 (7%/10%) | 114 (15%/17%) | 153 20%/12%) | 86 (12%/11%) | 316 (43%/12%) |
Residential | 4 (1%/1%) | 35 (6%/6%) | 65 (11%/10%) | 208 (35%/16%) | 75 (13%/10%) | 208 (35%/8%) |
Unknown | 19 (2%/6%) | 88 (7%/16%) | 181 (15%/27%) | 392 (33%/31%) | 106 (9%/14%) | 407 (34%/16%) |
Injury in traffic | ||||||
Yes | 262 (11%/78%) | 240 (10%/43%) | 194 (8%/29%) | 332 (13%/26%) | 361 (15%/47%) | 1099 (44%/43%) |
No | 76 (2%/22%) | 315 (9%/57%) | 484 (13%/71%) | 953 (26%/74%) | 400 (11%/53%) | 1435 (39%/57%) |
Number of injuries | 10 [8–13] | 5 [3–7] | 2 [1–3] | 2 [1–2] | 2 [1–4] | 3 [2–5] |
Length of stay, days (median, IQR) | 5 [3–9] | 3 [2–4] | 3 [2–4] | 1 [1–2] | 3 [2–4] | 1 [1–2] |
ISS (median, IQR) | 17 [14–29] | 14 [10–17] | 9 [5–10] | 4 [4–5] | 9 [5–9] | 3 [1–5] |
Mortality | 5.9% | 0.9% | 0.1% | 0.0% | 0.3% | 0.0% |