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SUMMARY:Building your best day: combining compositional analysis and optim
 isation theory - Professor Tim Olds\, School of Health Sciences\, Universi
 ty of South Australia
DTSTART:20171108T123000Z
DTEND:20171108T133000Z
UID:TALK93406@talks.cam.ac.uk
CONTACT:Paul Browne
DESCRIPTION:The foundational principle of behavioural epidemiology is that
  the way we use our time— physical activity\, sleep\, sitting\, social i
 nteractions — affects our health\, everything from asthma to eczema. Typ
 ically these studies have been done by regressing a health outcome (say de
 pression) against a behavioural domain\, such as physical activity. Howeve
 r\, 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 o
 ther domains collectively. \n\nThis presentation will show some examples o
 f 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 out
 come or set of outcomes.
LOCATION:Meeting Rooms 1&amp\;2\, MRC Epidemiology Unit\, Level 3\, Instit
 ute of Metabolic Science\, Cambridge Biomedical Campus\, Cambridge CB2 0QQ
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