Selection bias may lead to underestimation of risk of CTE in former football players: New statistical methods to prove that dose-response relationship cannot be due to sampling bias

Researchers have been studying chronic traumatic encephalopathy (CTE) and while much has been learned, diagnosing the disease still needs to be done post-mortem on autopsied brains donated to a brain bank. One criticism of the research is that brain bank study results have a selection bias because they are based on a subset of players most affected by CTE, and therefore not representative of the population of football players. Now a novel study by researchers from BUSM and Boston University School of Public Health (BUSPH) provides further evidence suggesting a dose-response relationship between football and CTE even after adjusting for selection bias.

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