Table 1.
Baseline Characteristics by Race/Insurance Group. P-values represent Chi-square comparisons of proportions between race/insurance groups (H0: there are no differences in proportions between groups).
| White Insured |
Black Insured |
Hispanic Insured |
White Uninsured |
Black Uninsured |
Hispanic Uninsured |
P value | |
|---|---|---|---|---|---|---|---|
| Male (%) | 246,020 (68.3) | 40,989 (68.4) | 34,449 (77.5) | 65,690 (75.8) | 20,542 (79.4) | 22,026 (83.6) | <0.001 |
| Median Age in years (IQR) | 42 (27–52) | 39 (27–49) | 33 (24–45) | 36 (25–46) | 36 (26–46) | 30 (23–41) | <0.001 |
| ISS (%) | |||||||
| 9 to 15 | 185135 (51.4) | 29,218 (48.7) | 22,279 (50.1) | 43,043 (49.7) | 12,729 (49.2) | 13,605 (51.7) | <0.001 |
| 16 to 24 | 86,236 (23.9) | 12,915 (21.5) | 10,783 (24.3) | 20,715 (23.9) | 5,439 (21.0) | 6,281 (23.8) | |
| >24 | 162,870 (17.5) | 9,507 (15.9) | 8,733 (18.9) | 14,564 (16.8) | 3,852 (14.9) | 4,313 (16.4) | |
| SBP < 90 (%) | 14,423 (4.0) | 2,491 (4.1) | 2,068 (4.7) | 4,186 (4.8) | 1,342 (5.2) | 1,168 (4.4) | <0.001 |
| Mechanism of Injury (%) | |||||||
| Motor Vehicle Traffic | 193,660 (53.8) | 35,576 (59.3) | 25,733 (57.9) | 47,044 (54.3) | 14,313 (55.3) | 14,880 (56.5) | <0.001 |
| Cyclist | 6,136 (1.7) | 409 (0.7) | 389 (0.9) | 1,352 (1.5) | 228 (0.9) | 275 (1.0) | |
| Pedestrian | 1,356 (0.4) | 290 (0.5) | 205 (0.5) | 453 (0.5) | 143 (0.5) | 148 (0.6) | |
| Fall | 88,595 (24.6) | 10,754 (17.9) | 9,483 (21.3) | 17,076 (19.7) | 3,748 (14.5) | 5,148 (19.5) | |
| Struck by/against | 20,425 (5.7) | 6,916 (11.5) | 3,754 (8.4) | 8,297 (9.6) | 4,610 (17.8) | 3,218 (12.2) | |
| Deaths (%) | 14, 601 (4.1) | 2,676 (4.5) | 2,409 (5.4) | 5,107 (5.9) | 1,706 (6.6) | 1,574 (6.0) | <0.001 |
SBP = systolic blood pressure on ED presentation. ISS=Injury Severity Score.