Demography

Disease

Internal medicine

Sociology

Socioeconomic status

Medicine

Confidence interval

Cohort

Gerontology

Cohort study

Hazard ratio

Population

Family medicine

Environmental health

Record linkage

JAMA Neurology

<h3>Importance</h3> Neurodegenerative disease mortality is higher among former professional soccer players than general population controls. However, the factors contributing to increased neurodegenerative disease mortality in this population remain uncertain. <h3>Objective</h3> To investigate the association of field position, professional career length, and playing era with risk of neurodegenerative disease among male former professional soccer players. <h3>Design, Setting, and Participants</h3> This cohort study used population-based health record linkage in Scotland to evaluate risk among 7676 male former professional soccer players born between January 1, 1900, and January 1, 1977, and 23 028 general population control individuals matched by year of birth, sex, and area socioeconomic status providing 1 812 722 person-years of follow-up. Scottish Morbidity Record and death certification data were available from January 1, 1981, to December 31, 2016, and prescribing data were available from January 1, 2009...

Association of Field Position and Career Length With Risk of Neurodegenerative Disease in Male Former Professional Soccer Players