Table 1 Patient demographics, injury patterns, and disposition. For discrete variables, percentages are calculated by dividing by total patients (not by the number of patients with the given variable)
All patients | No neurosurgical intervention | Neurosurgical intervention | ||||
|---|---|---|---|---|---|---|
N or mean | % or SD | N or mean | % or SD | N or mean | % or SD | |
Total Included Patients | 50,496 | 100 % | 46,022 | 91.2 % | 4,474 | 8.8 % |
Demographics | ||||||
Male gender (N, %) | 30386 | 60.2 | 27407 | 59.6 | 2979 | 66.6 |
Age (years) (mean, SD) | 60.6 | 20.5 | 60.2 | 20.7 | 65.2*** | 18.3 |
Physiology | ||||||
ED GCS (mean, SD) | 14.8 | 0.4 | 14.8 | 0.4 | 14.7*** | 0.4 |
ED SBP (mean, SD) | 144.4 | 26.4 | 144.1 | 26.4 | 147.6*** | 26.6 |
ED Pulse (mean, SD) | 85.3 | 18 | 85.6 | 18 | 81.7*** | 18 |
ED RR (mean, SD) | 18.1 | 3.7 | 18.2 | 3.8 | 17.9*** | 3.4 |
Injury Characteristics | ||||||
ISS at discharge (mean, SD) | 13.7 | 6.5 | 13.1 | 6.1 | 19.7*** | 6.7 |
Traumatic Brain Injury Patterns | ||||||
Isolated Contusion (N, %) | 5636 | 11.2 % | 5497 | 11.9 % | 139 | 3.1 % |
Isolated SAH (N, %) | 13191 | 26.1 % | 12994 | 28.2 % | 197 | 4.4 % |
Isolated SDH (N, %) | 18784 | 37.2 % | 15807 | 34.3 % | 2977 | 66.5 % |
Isolated EH (N, %) | 901 | 1.8 % | 742 | 1.6 % | 159 | 3.6 % |
Multiple Injury Types (N, %) | 11984 | 23.7 % | 10982 | 23.9 % | 1002 | 22.4 % |
Comorbidities | ||||||
Total comorbidities (mean, SD) | 0.9 | 1.1 | 0.9 | 1.1 | 0.9 | 1.2 |
Presence of Coagulopathy (N, %) | 2340 | 4.6 % | 2061 | 4.5 % | 279 | 6.2 % |
ACS Trauma Center Level | ||||||
NA/ Unverified (N, %) | 14713 | 29.1 % | 13214 | 28.7 % | 1499 | 33.5 % |
Level IV (N, %) | 20 | 0 % | 19 | 0 % | 1 | 0 % |
Level III (N, %) | 802 | 1.6 % | 730 | 1.6 % | 72 | 1.6 % |
Level II (N, %) | 13200 | 26.1 % | 12110 | 26.3 % | 1090 | 24.4 % |
Level I (N, %) | 21761 | 43.1 % | 19949 | 43.3 % | 1812 | 40.5 % |
ED Disposition | ||||||
Observation unit (N, %) | 827 | 1.6 % | 818 | 1.8 % | 9 | 0.2 % |
Floor bed (N, %) | 13329 | 26.4 % | 12756 | 27.7 % | 573 | 12.8 % |
Telemetry/step-down unit (N, %) | 5292 | 10.5 % | 5122 | 11.1 % | 170 | 3.8 % |
Intensive Care Unit (ICU) (N, %) | 29043 | 57.5 % | 26580 | 57.8 % | 2463 | 55.1 % |
Operating Room (N, %) | 2005 | 4 % | 746 | 1.6 % | 1259 | 28.1 % |
Outcomes | ||||||
LOS (mean days, SD) | 5.4 | 6.5 | 4.8 | 5.5 | 11.2*** | 11.2 |
Expired during Admission (N, %) | 1594 | 3.2 % | 1141 | 2.5 % | 453 | 10.1 % |