Where did you get the 99% from? I thought the conclusion from that study was at least 9% of NFL players would gone on to develop CTE. This estimate was made by

Where did you get the 99% from? I thought the conclusion from that study was at least 9% of NFL players would gone on to develop CTE. This estimate was made by making a conservative (but very unrealistic estimate) that EVERY player that did not donate their brains did not have CTE.