1. OP63 Device assessed physical activity, sedentary behaviour and sleep in relation to midlife cognition: compositional analysis of the 1970 British Cohort Study*. (26th August 2022) Authors: Mitchell, John J; Blodgett, Joanna M; Chastin, Sebastien; Jefferis, Barbara J; Wannamethee, Goya; Hamer, Mark Journal: Journal of epidemiology and community health Issue: Volume 76(2022)Supplement 1 Page Start: A30 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗