Table 1 Clinical characteristics of multiple trauma patients in different time periods (6.00 am- 11.59 am, 12.00 pm- 5.59 pm, 6.00 pm–11.59 pm, 0.00 am–5.59 am). P values are shown for all data

All multiple trauma patients

14,496

24,226

16,278

3939

58,939

 Male

9780 (67.5%)

17,059 (70.4%)

11,389 (70.0%)

2786 (70.7%)

41,014

 female

4716 (32.5%)

7167 (29.6%)

4889 (30.0%)

1153 (29.3%)

17,925

< 0,0001

 Car

3203 (22.6%)

4791 (20.2%)

3219 (20.2%)

970 (25.3%)

12,183

 Motorcycle

1218 (8.6%)

2820 (11.9%)

2512 (15.8%)

159 (4.1%)

6709

 Bicycle

1326 (9.3%)

2237 (9.4%)

1466 (9.2%)

126 (3.3%)

5155

 Pedestrian

1147 (8.1%)

1637 (6.9%)

1499 (9.4%)

159 (4.1%)

4442

 Fall > 3 m

2412 (17%)

4516 (19.0%)

2045 (12.8%)

754 (19.6%)

9727

 Fall< 3 m

3371 (23.8%)

5342 (22.5%)

3637 (22.8%)

1163 (30.3%)

13,513

 Others

1510 (10.6%)

2375 (10%)

1556 (9.8%)

508 (13.2%)

5949

< 0,0001

 Age mean

54.6

55.3

50.1

49.42

52.36

< 0,0001

 standard deviation

21.5

21.6

22.6

22.8

22.13

 n

14,474

24,197

16,255

3932

58,858

 ISS mean

21.0

20.6

21.0

21.4

21.0

< 0,0001

 standard deviation

11.7

11.4

11.5

11.5

11.5

 n

14,496

24,226

16,278

3939

58,939

 GCS preclinical mean

12.4

12.6

12.0

11.6

12.15

< 0,0001

 standard deviation

4.1

4.0

4.3

4.4

4.2

 n

13,582

22,760

15,302

3686

55,330

 AIS ≥3 head

5819 (40.1%)

9199 (38.0%)

6974 (42.8%)

1848 (46.9%)

23,840

< 0,0001

 AIS ≥3 thorax

7052 (48.6%)

12,317 (50.8%)

7786 (47.8%)

1794 (45.5%)

28,949

< 0,0001

 AIS ≥3 abdomen

1807 (12.5%)

2685 (11.1%)

1864 (11.5%)

502 (12.7%)

6858

< 0,0001

 Level I trauma center

8117 (56.0%)

14,344 (59.2%)

9847 (60.5%)

2365 (60.0%)

34,673

 Level II trauma center

4781 (33.0%)

7453 (30.8%)

4963 (30.5%)

1208 (30.7%)

18,405

 Level III trauma center

1598 (11.0%)

2429 (10.0%)

1468 (9.0%)

366 (9.3%)

5861

< 0,0001

 mortality

2075 (14.3%)

3121 (12.9%)

2217 (13.6%)

619 (15.7%)

8032

< 0,0001