Doesn’t mean crap. Hoe many died of heart attack? That includes the time before “spearing” became illegal and was a major cause of paralysis and death. Also, not corrected for deaths due to lack of hydration during practice, again a huge cause of collapse.
Let us see the number of incapcitions and DEATHS during competitions for the last 2 years.
Seems to me the CDC should highlighting such a comparison. That's what real scientists would do.