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. 2023 Dec 19;13(12):e078638. doi: 10.1136/bmjopen-2023-078638

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© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.

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Website Functionality. ᵃTasks completed by the project Administrator on a separate account. ^ᵝStudy screening is performed externally to the website. ^ᵞTimepoint website user is invited to take part in an interview. PD, Parkinson’s disease; PwP, people with Parkinson’s.