At least one in four former NFL players who died between 2016 and 2021 was found to have had chronic traumatic encephalopathy (CTE), according to a study released on Tuesday. Researchers analyzed 1,712 former NFL players who died between 2008 and 2021. Key points and original sources are listed below.

• At least one in four former NFL players who died between 2016 and 2021 was found to have had chronic traumatic encephalopathy (CTE), according to a study released on Tuesday.S1

• Researchers analyzed 1,712 former NFL players who died between 2008 and 2021.S2

• The New York Times raises the question of whether OSHA should get involved.S3