Extracted data for: Repetitive head impacts during contact sports and fluid biomarkers of neural damage – A meta-analysis

The three datasets are named: • RHI biomarkers extracted data natural exposure.csv • RHI biomarkers extracted data experimental exposure.csv • RHI biomarkers extracted data experimental exposure controlled studies.csv The read me file is named: • Readme extracted data RHI biomarkers.docx The data dictionary is named: • Data dictionary RHI biomarkers.csv Natural exposure extracted data The extracted data for all included studies on natural exposure to repetitive head impacts can be found in “RHI biomarkers extracted data natural exposure.csv”.

Experimental exposure extracted data The extracted data for all included studies for the analysis of a pre- post change in fluid biomarker concentration after exposure to football heading can be found in “RHI biomarkers extracted data experimental exposure.csv”. For the analysis of the difference in pre- post change in fluid biomarker concentration after exposure to football heading between a heading group and a control group, the extracted data can be found in “RHI biomarkers extracted data experimental exposure controlled.csv”.