The Incidence of Concussion in a Professional Australian Rugby League Team, 1998–2012

Table 2

Frequency of repeat concussions and timing of injury.

Number of concussions sustained	Number of players	Portion of players injured	Average duration between concussion injuries
1	39	16.3%	—
2	22	9.2%	583 days
3	17	7.1%	309 days
4	6	2.5%	491 days
5	4	1.7%	318 days
6	1	0.5%	587 days
7	1	0.5%	204 days
Total number of players with multiple concussions	51	21.3%	381 days