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DTSTART:20160101T000000
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DTSTART;TZID=UTC:20171108T123000
DTEND;TZID=UTC:20171108T133000
DTSTAMP:20171010T102439Z
CREATED:20171010T101408Z
LAST-MODIFIED:20171010T102439Z
UID:8681-1510144200-1510147800@www.epi.ims.cam.ac.uk
SUMMARY:Building your best day: combining compositional analysis and optimisation theory
DESCRIPTION:All are invited to the CEDAR/MRC Epidemiology Seminar: \nProfessor Tim Olds\, School of Health Sciences\, University of South Australia\nBuilding your best day: combining compositional analysis and optimisation theory\nMRC Epidemiology Unit meeting rooms 1 and 2\, Institute of Metabolic Science\, Cambridge Biomedical Campus \nAbstract\nThe foundational principle of behavioural epidemiology is that the way we use our time— physical activity\, sleep\, sitting\, social interactions — affects our health\, everything from asthma to eczema. Typically these studies have been done by regressing a health outcome (say depression) against a behavioural domain\, such as physical activity. However\, because time use data are co-dependent\, any change in time allocated to one domain must be matched by an equal and opposite allocation to the other domains collectively. This presentation will show some examples of the application of compositional data analysis (CoDA) as a new approach to time-use data. By combining CoDA with optimisation theory\, we can move towards specifying the best possible 24-hour day for any given health outcome or set of outcomes. \nAbout Prof Olds\nTim Olds is a professor of behavioural epidemiology at the University of South Australia. After completing a PhD in French Studies at the University of Sydney\, Tim went on to study exercise science\, receiving a second PhD in 1997. His research interests have been in mathematical modelling of cycling performance; population and sports anthropometry; secular trends in the sleep\, fitness\, fatness\, physical activity and food intake of children and adolescents; and the relationship between how people use their time and health. Tim has $27m in grants and 292 publications. http://people.unisa.edu.au/timothy.olds \n 
URL:https://www.epi.ims.cam.ac.uk/event/seminar-building-your-best-day-081117/
LOCATION:MRC Epidemiology meeting rooms 1&2\, Level 3 IMS\, Cambridge Biomedical Campus\, Cambridge\, CB2 0SL\, United Kingdom
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