Table 1 Study population characteristics
Overall (n = 222,540) | |
|---|---|
Age (years), median (IQR) | 62 (41, 77) |
16–39 (years), n (%) | 53,071 (23.8) |
40–64 (years), n (%) | 65,572 (29.5) |
≥ 65 (years), n (%) | 103,897 (46.7) |
Male, n (%) | 138,023 (62.0) |
Blunt mechanism injury, n (%) | 213,280 (95.8) |
Systolic blood pressure (mmHg), median (IQR) | 137 (117, 158) |
< 90 mmHg, n (%) | 15,672 (7.0) |
Heart rate (bpm), median (IQR) | 83 (72, 96) |
≥120 bpm, n (%) | 12,883 (5.8) |
Respiratory rate (cpm), median (IQR) | 20 (17, 24) |
10–29 (cpm), n (%) | 196,595 (88.4) |
< 10 (cpm), n (%) | 3380 (1.5) |
≥ 30 (cpm), n (%) | 22,565 (10.1) |
Japan Coma Scale | |
0, n (%) | 104,382 (46.9) |
1, n (%) | 37,934 (17.0) |
2, n (%) | 21,697 (9.7) |
3, (%) | 13,929 (6.3) |
10, n (%) | 14,875 (6.7) |
20, n (%) | 4320 (1.9) |
30, n (%) | 3549 (1.6) |
100, n (%) | 5484 (2.5) |
200, n (%) | 6810 (3.1) |
300, n (%) | 9560 (4.3) |
One-digit (1, 2, 3), n (%) | 73,560 (33.1) |
Two-digit (10, 20, 30), n (%) | 22,744 (10.2) |
Three-digit (100, 200, 300), n (%) | 21,854 (9.8) |
Glasgow Coma Scale, median (IQR) | 15 (13, 15) |
≤ 8, n (%) | 22,514 (10.1) |
Eye response, median (IQR) | 4 (3, 4) |
Verbal response, median (IQR) | 5 (4, 5) |
Motor response, median (IQR) | 6 (6, 6) |
Craniotomy, n (%) | 7165 (3.2) |
Head AIS score of 4 or 5, n (%) | 39,151 (17.6) |
Isolated severe TBI, n (%) | 9849 (4.4) |
Surgical or hemostatic intervention, n (%) | |
Thoracotomy, n (%) | 2033 (0.9) |
Laparotomy, n (%) | 5976 (2.7) |
Angioembolization, n (%) | 5879 (2.6) |
Injury Severity Score, median (IQR) | 10 (9, 18) |
≤ 8, n (%) | 42,332 (19.0) |
9–15, n (%) | 92,531 (41.6) |
16≤, n (%) | 87,677 (39.4) |
In-hospital mortality, n (%) | 15,860 (7.1) |