Table 3 Differences among level 1, 2 and 3 trauma centers in different time periods
6.00 am–11.59 am morning) | 12.00 pm- 5.59 pm (afternoon) | 6 pm- 11.59 pm (evening) | 0.00 am- 5.59 am (night) | total | ||||
|---|---|---|---|---|---|---|---|---|
ISS | Level I | Mean value | 22.9 | 22.1 | 22.3 | 22.2 | 22.4 | < 0,0001 |
Standard deviation | 12.6 | 12.0 | 12.0 | 11.6 | 12.1 | |||
n | 8117 | 14,344 | 9847 | 2365 | 34,673 | |||
Level II | Mean value | 19.4 | 19.1 | 19.6 | 20.8 | 19.7 | < 0,0001 | |
Standard deviation | 10.4 | 10.3 | 10.6 | 11.5 | 10.7 | |||
n | 4781 | 7453 | 4963 | 1208 | 18,405 | |||
Level III | Mean value | 16.3 | 16.7 | 17.0 | 18.5 | 17.1 | < 0,0001 | |
Standard deviation | 8.6 | 8.8 | 9.5 | 10.3 | 9.3 | |||
n | 1598 | 2429 | 1468 | 366 | 5861 | |||
Time from arrival at the trauma room until CT scan minutes | Level I | Mean value | 21.0 | 20.3 | 20.7 | 21.9 | 21.0 | < 0,0001 |
Standard deviation | 15.5 | 14.8 | 14.8 | 14.5 | 14.9 | |||
n | 7324 | 12,974 | 8952 | 2130 | 31,380 | |||
Level II | Mean value | 26.0 | 24.8 | 24.9 | 27.0 | 25.7 | < 0,0001 | |
Standard deviation | 21.3 | 19.9 | 19.3 | 20.4 | 20.2 | |||
n | 4001 | 6298 | 4233 | 1057 | 15,589 | |||
Level III | Mean value | 33.6 | 31.3 | 31.0 | 33.3 | 32.3 | < 0,0001 | |
Standard deviation | 28.0 | 25.4 | 25.5 | 28.3 | 26.8 | |||
n | 1061 | 1616 | 987 | 256 | 3920 | |||
Time from trauma room until emergency operation minutes | Level I | Mean value | 72.9 | 73.0 | 74.8 | 72.8 | 73.4 | < 0,0001 |
Standard deviation | 26.9 | 26.3 | 26.2 | 26.1 | 26.4 | |||
n | 467 | 820 | 611 | 165 | 2063 | |||
Level II | Mean value | 76.6 | 74.8 | 74.8 | 73.9 | 75.0 | < 0,0001 | |
Standard deviation | 27.2 | 27.6 | 28.5 | 24.7 | 27.0 | |||
n | 180 | 323 | 269 | 50 | 822 | |||
Level III | Mean value | 64.1 | 71.3 | 73.3 | 69.3 | 69.5 | < 0,0001 | |
Standard deviation | 34.6 | 32.9 | 35.6 | 28.0 | 32.8 | |||
n | 46 | 72 | 53 | 10 | 181 | |||