Table 1 NTDB patient characteristics in the development cohort
From: Development and validation of a pediatric model predicting trauma-related mortality
Variable | Overall | Train data (80%) | Test data (20%) | ||
|---|---|---|---|---|---|
N = 693,192 | Survivors N = 546,726 | Non- Survivors N = 7,828 | Survivors N = 136,684 | Non- Survivors N = 1,957 | |
Age | |||||
0-4y | 138,881 | 109,426 (20%) | 1,463 (19%) | 27,388 (20%) | 361 (18%) |
5-9y | 148,144 | 118,164 (22%) | 721 (9.2%) | 29,448 (22%) | 183 (9.4%) |
10-14y | 157,377 | 124,823 (23%) | 1,169 (15%) | 31,071 (23%) | 297 (15%) |
15-18y | 248,790 | 194,313 (36%) | 4,475 (57%) | 48,777 (36%) | 1,116 (57%) |
Gender | |||||
Female | 228,179 | 180,075 (33%) | 2,327 (30%) | 45,129 (33%) | 585 (30%) |
Male | 465,013 | 366,651 (67%) | 5,501 (70%) | 91,555 (67%) | 1,372 (70%) |
Glasgow coma scale | |||||
Mild (13–15) | 638,090 | 509,687 (93%) | 585 (7.5%) | 127,559 (93%) | 180 (9.2%) |
Moderate (9–12) | 13,845 | 10,965 (2.0%) | 174 (2.2%) | 2,682 (2.0%) | 45 (2.3%) |
Severe (3–8) | 41,257 | 26,074 (4.8%) | 7,069 (90%) | 6,443 (4.7%) | 1,732 (89%) |
Physiologic Measures | |||||
SBP | 123 (112, 135) | 123 (112, 135) | 108 (78, 133) | 123 (112, 135) | 110 (81, 136) |
Pulse | 100 (85, 116) | 100 (85, 116) | 107 (75, 134) | 100 (85, 116) | 108 (74, 136) |
RR | 20 (18, 24) | 20 (18, 24) | 16 (0, 21) | 20 (18, 24) | 16 (0, 21) |
Temp (C) | 36.7 (36.3, 37) | 36.7 (36.3, 37) | 36 (35, 36.7) | 36.3 (36.3, 37) | 36 (35, 36.7) |
Race | |||||
White | 453,239 | 358,319 (66%) | 4,359 (56%) | 89,415 (65%) | 1,146 (59%) |
Black/ African American | 123,332 | 96,763 (18%) | 2,052 (26%) | 24,029 (18%) | 488 (25%) |
Asian | 12,191 | 9,612 (1.8%) | 130 (1.7%) | 2,423 (1.8%) | 26 (1.3%) |
Other | 104,445 | 82,044 (15%) | 1,287 (16%) | 20,817 (15%) | 297 (15%) |
Mechanism | |||||
Fall | 174,992 | 139,533 (26%) | 311 (4.0%) | 35,070 (26%) | 78 (4.0%) |
Natural/ environmental | 5,800 | 4,594 (0.9%) | 21 (0.3%) | 1,179 (0.9%) | 6 (0.4%) |
Cut/Pierce | 22,627 | 17,991 (3.3%) | 135 (1.7%) | 4,469 (3.2%) | 32 (1.6%) |
Fire/Flame | 5,662 | 4,438 (0.8%) | 87 (1.1%) | 1,114 (0.8%) | 23 (1.2%) |
Firearm | 21,311 | 15,615 (2.9%) | 1,357 (17%) | 4,025 (2.9%) | 314 (16%) |
Hot object/ Substance | 9,433 | 7,568 (1.4%) | 8 (< 0.1%) | 1,855 (1.4%) | 2 (0.1%) |
Machinery | 2,335 | 1,848 (0.3%) | 6 (< 0.1%) | 478 (0.3%) | 3 (0.2%) |
MVT Motorcyclist | 9,549 | 7,535 (1.4%) | 139 (1.8%) | 1,842 (1.3%) | 33 (1.7%) |
MVT Occupant | 244,295 | 191,853 (35%) | 3,460 (44%) | 48,111 (35%) | 871 (45%) |
MVT Pedal Cyclist | 10,859 | 8,505 (1.6%) | 176 (2.2%) | 2,130 (1.6%) | 48 (2.5%) |
MVT Pedestrian | 33,574 | 26,141 (4.8%) | 797 (10%) | 6,429 (4.7%) | 207 (11%) |
Overexertion | 1,553 | 1,256 (0.2%) | 0 (0%) | 297 (0.2%) | 0 (0%) |
Pedal cyclist, Other | 28,949 | 23,242 (4.3%) | 34 (0.4%) | 5,660 (4.1%) | 13 (0.7%) |
Pedestrian, Other | 3,248 | 2,543 (0.5%) | 57 (0.7%) | 632 (0.5%) | 16 (0.8%) |
Struck by, Against | 52,151 | 41,402 (7.6%) | 219 (2.8%) | 10,471 (7.7%) | 59 (3.0%) |
Transport, Other | 40,169 | 31,950 (5.8%) | 267 (3.4%) | 7,878 (5.8%) | 74 (3.8%) |
Injury Severity Score (ISS) | 5 (4,9) | 5 (4,9) | 29 (25, 38) | 5 (4,9) | 29 (25, 38) |
Revised Trauma Score (RTS) | 9.52 (9.52, 9.52) | 9.52 (9.52, 9.52) | 5.47 (4.45, 5.76) | 9.52 (9.52, 9.52) | 5.76 (4.89, 5.76) |