The involvement and engagement of patients and the public in cohorts used as a platform for other studies is complex.   Our aim was to create a structure to enable meaningful, sustainable public involvement within the cmRCT framework. We have established a Frailty Oversight Group (FOG) of four key individuals with extensive links to other relevant local community structures and individuals.  And, are working towards the development of a network of interconnected PPIE structures across time, geographical space and communities of interest, which add value to all of the work within the cohort.  More detail of our PPIE model can be found here:

https://researchinvolvement.biomedcentral.com/articles/10.1186/s40900-016-0044-9