Table 1 Baseline characteristics of the trauma cohort at Södersjukhuset. Subdivided by severely injured patients (NISS > 15) and patients included only because of TTA on arrival to hospital (NISS < 15)

Patient characteristics:

 Sex (male: female), % (n)

59:41

(497:352)

58:42

(1564:1115)

 Age, median (Q1, Q3)

71

(56, 83)

55

(35, 75)

Injury severity and mortality:

 ISS, median (Q1, Q3)

17

(13, 20)

2

(1, 5)

 NISS, median (Q1, Q3)

22

(17, 27)

2

(3, 8)

 30-day mortality, % (n)

11%

(n = 92)

2.5%

(n = 67)

Injury type:

 Blunt, % (n)

98%

(835)

94%

(2516)

 Penetrating, % (n)

1.6%

(14)

6.1%

(163)

Injury intention:

 Accident, % (n)

94%

(799)

92%

(2 453)

 Violent assault, % (n)

5.3%

(45)

6.5%

(174)

 Self-inflicted, % (n)

0.6%

(5)

1.9%

(52)

Mechanism of injury:

 Low fall

56%

(472)

39%

(1047)

 High fall

20%

(171)

17%

(464)

 Bicycle accident

11%

(94)

9.6%

(257)

 Hit/struck by blunt object

5.4%

(46)

8.5%

(229)

 Motorcycle accident

2.4%

(20)

2.9%

(77)

 Injured pedestrian

1.8%

(15)

9.6%

(54)

 Injured by knife/sharp object

1.6%

(14)

6.2%

(165)

 Motor vehicle accident

1.4%

(12)

13%

(355)

 Explosion injury

0%

(0)

0.2%

(6)

 Gun shot wound

0%

(0)

0.1%

(3)

 Other vehicle

0.5%

(4)

0.6%

(17)

 Other mechanism of injury

0.1%

(1)

0.2%

(5)