Table 3.
In-hospital information and outcomes of the study participants
| Parameters | Total | JCS level 1 digit | JCS level 2 digits | JCS level 3 digits |
| (n=164 723) % |
(n=125 864) % |
(n=13 561) % |
(n=25 298) % |
|
| In-hospital Information | ||||
| Time to hospital arrival (min), median (IQR) | 37 (29–50) | 38 (30–51) | 37 (29–50) | 33 (26–44) |
| Tracheal intubations | 24 280 (14.7) | 6894 (5.5) | 2906 (21.4) | 14 480 (57.2) |
| Neurosurgical interventions | 4831 (2.9) | 1310 (1.0) | 734 (5.4) | 2787 (11.0) |
| Head CT | 119 952 (72.8) | 87 026 (69.1) | 12 320 (90.8) | 20 606 (81.5) |
| ICU admission | 100 136 (60.8) | 71 212 (56.6) | 10 988 (81.0) | 17 936 (70.9) |
| Mortality in ER or operation room | 5848 (3.6) | 456 (0.4) | 231 (1.7) | 5161 (20.4) |
| Length of hospital stay (day), median (IQR) | 14 (0–62) | 17 (0–64) | 18 (0–71) | 1 (0–42) |
| Primary outcome | ||||
| In-hospital mortality | 17 957 (10.9) | 3513 (2.8) | 1459 (10.8) | 12 985 (51.3) |
| Secondary outcomes | ||||
| GCS ≤8 | 22 634 (13.7) | 1615 (1.3) | 1907 (14.1) | 19 112 (75.5) |
| Head AIS ≤3 | 52 197 (31.7) | 27 121 (21.5) | 7072 (52.1) | 18 004 (71.2) |
| ISS ≥16 | 70 262 (42.7) | 41 597 (33.1) | 8231 (60.7) | 20 434 (80.8) |
The number of missing GCS on arrival, Head AIS and ISS was 9910 (6.0%), 3517 (2.1%) and 3857 (2.3%), respectively.
Time to hospital arrival denotes time from emergency call to hospital arrival.
AIS, Abbreviated Injury Scale; ER, emergency room; GCS, Glasgow Coma Scale; ICU, intensive care unit; ISS, Injury Severity Score; JCS, Japan Coma Scale.