Table 3
Details of participants' main sports
Sports
Patients
Controls
Rugby
1
3
Sailing
0
3
Hockey
2
3
Volleyball
3
0
Orienteering
0
1
Football
7
1
Rowing
2
1
Running
3
0
Climbing
0
1
Archery
0
1
Frisbee
0
1
Squash
0
1
Tennis
1
1
Aerobics
0
1