Concussions accounted for 50 % of all head injuries and 7 % of all injuries New Zealand premier ( 6 % ) and New Zealand community ( 8 % ) rugby .
All injuries is comparable with the English Premiership ( 7 % ) .
Concussions accounted for 50 % of all head injuries and 7 % of all injuries , which is comparable with the English Premiership ( 7 % ) , New Zealand premier ( 6 % ) and New Zealand community ( 8 % ) rugby .