Hello and welcome to episode 38.
This episode again considers the importance of head injury in sport and the development of future neurodegenerative disease. This particular cohort study analyses the risk of development of neurodegenerative disease in Scottish football players.
In the article the game is referred to as soccer, I assume as the journal is American, while the game is predominantly referred to as football around the world bar the United States.
The topic of head injury in sport has been considered before in the podcast in episode 4; link provided :(https://talk-medical-english.uk/2020/12/18/neurological-damage-and-rugby-union/)
This is a cohort study that retrospectively identifies the exposed group of interest through historical records of professional players. Exposure is quantified through the proxy of position played on the pitch as it is not possible to identify exposure directly for individuals. Exposure has also been quantified through the length of career. Control for confounding has been attempted by utilising matched population-based controls by age and area socioeconomic status.
The link to the article is found in the notes:
https://jamanetwork.com/journals/jamaneurology/fullarticle/2782750?resultClick=1