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. 2016 Sep 6;1(3):CNC17. doi: 10.2217/cnc-2016-0006

Table 2. . Concussion history information.

  n (%)
Previous number of concussions:  
– 1 40 (78.4)
– 2+ 10 (19.6)
– Missing 1 (2.0)
– Total 51

Length of time since last concussion:  
– <12 months 17 (33.3)
– 12–24 months 14 (27.5)
– >24 months 15 (29.4)
– Missing 5 (9.8)
– Total 51