Table 1: Demographic characteristics

discriminated by type of sport.

Type of sport

N (%)

Median

age

Male sex,

N (%)

White race,

N (%)

Football

24 (66.7)

15.5

23 (95.8)

22 (91.7)

Referees

3 (8.3)

25.0

3 (100.0)

3 (100.0)

Combat sports

2 (5.6)

32.5

1 (50.0)

2 (100.0)

Rugby

2 (5.6)

22.5

2 (100.0)

2 (100.0)

Basketball

1 (2.8)

14.0

1 (100.0)

1 (100.0)

Boxing

1 (2.8)

23.0

0 (0.0)

1 (100.0)

Cycling

1 (2.8)

20.0

1 (100.0)

1 (100.0)

Handball

1 (2.8)

10.0

1 (100.0)

1 (100.0)

Volleyball

1 (2.8)

30.0

1 (100.0)

1 (100.0)

Total

36 (100.0)

18.5

(IQR = 16)

33 (91.7)

34 (94.4)