Table 1.
Patient and trauma characteristics of institutional and NTDB cohorts
| Institutional (n = 393) | NTDB (n = 11,399) | p-value | |
|---|---|---|---|
| Age at injury (years) | 15.9 [9.1, 17.7] | 16.0 [11.0, 17.0] | 0.476 |
| Gender | |||
| Male | 271 (69%) | 8,527 (75%) | 0.029 |
| Female | 122 (31%) | 2,868 (25%) | |
| Race | |||
| White | 254 (65%) | 5,453 (48%) | <0.001 |
| Black | 110 (28%) | 3,370 (30%) | |
| Asian | 2 (1%) | 160 (1%) | |
| American Indian | 1 (0%) | 94 (1%) | |
| Other/Unknown | 24 (6%) | 2,322 (20%) | |
| Mechanism of Injury | |||
| Blunt | 246 (63%) | 5,715 (50%) | <0.001 |
| Penetrating | 121 (31%) | 5,003 (44%) | |
| Other/Unspecified | 24 (6%) | 606 (5%) | |
| Injury Severity Score | 17.0 [9.0, 27.5] | 14.0 [9.0, 26.0] | < 0.001 |
| ED Pulse (beats per minute) | 106.0 [88.0, 125.0] | 104.0 [87.0, 124.0] | 0.300 |
| ED Systolic Blood Pressure (mmHg) | 118.0 [106.0, 130.0] | 121.0 [105.0, 137.0] | < 0.001 |
| ED Respiratory Rate (breaths per min) | 20.0 [18.0, 24.0] | 20.0 [18.0, 24.0] | 0.265 |
| ED Temperature (F) | 98.2 [97.6, 98.6] | 98.1 [97.0, 98.6] | < 0.001 |
| ED Glasgow Coma Score | 15.0 [14.0, 15.0] | 15.0 [14.0, 15.0] | 0.930 |
| Time to Incision (hours) | 2.5 [0.9, 5.5] | 2.0 [1.0, 4.8] | 0.238 |
| Operative Approach | |||
| MIS | 64 (16%) | 1,363 (12%) | <0.001 |
| Open | 305 (78%) | 9,736 (85%) | |
| Conversion | 24 (6%) | 300 (3%) | |
| Length of Stay (days) | 6.0 [4.0, 10.8] | 7.0 [4.0, 13.0] | 0.025 |
| ICU days | 0 [0, 4] | 1 [0, 5] | < 0.001 |
| Ventilator days | 0 [0, 2] | 0 [0, 2] | 0.052 |
| Vital status at discharge | |||
| Alive | 357 (91%) | 10,217 (90%) | 0.221 |
| Deceased/Expired | 36 (9%) | 1,099 (10%) | |
| Not Known/Recorded | 0 | 83 (1%) | |
NTDB, National Trauma Data Bank; ED, emergency department; ICU, intensive care unit; F, Fahrenheit