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    Television viewing time and reduced life expectancy: A life table analysis

    Access Status
    Open access via publisher
    Authors
    Veerman, J.
    Healy, Genevieve
    Cobiac, L.
    Vos, T.
    Winkler, E.
    Owen, N.
    Dunstan, D.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Veerman, J. and Healy, G. and Cobiac, L. and Vos, T. and Winkler, E. and Owen, N. and Dunstan, D. 2012. Television viewing time and reduced life expectancy: A life table analysis. British Journal of Sports Medicine. 46 (13): pp. 927-930.
    Source Title
    British Journal of Sports Medicine
    DOI
    10.1136/bjsports-2011-085662
    ISSN
    0306-3674
    School
    School of Physiotherapy and Exercise Science
    URI
    http://hdl.handle.net/20.500.11937/35858
    Collection
    • Curtin Research Publications
    Abstract

    Background Prolonged television (TV) viewing time is unfavourably associated with mortality outcomes, particularly for cardiovascular disease, but the impact on life expectancy has not been quantifi ed. The authors estimate the extent to which TV viewing time reduces life expectancy in Australia, 2008. Methods The authors constructed a life table model that incorporates a previously reported mortality risk associated with TV time. Data were from the Australian Bureau of Statistics and the Australian Diabetes, Obesity and Lifestyle Study, a national population-based observational survey that started in 1999-2000. The authors modelled impacts of changes in population average TV viewing time on life expectancy at birth. Results The amount of TV viewed in Australia in 2008 reduced life expectancy at birth by 1.8 years (95% uncertainty interval (UI): 8.4 days to 3.7 years) for men and 1.5 years (95% UI: 6.8 days to 3.1 years) for women. Compared with persons who watch no TV, those who spend a lifetime average of 6 h/day watching TV can expect to live 4.8 years (95% UI: 11 days to 10.4 years) less. On average, every single hour of TV viewed after the age of 25 reduces the viewer's life expectancy by 21.8 (95% UI: 0.3-44.7) min. This study is limited by the low precision with which the relationship between TV viewing time and mortality is currently known. Conclusions TV viewing time may be associated with a loss of life that is comparable to other major chronic disease risk factors such as physical inactivity and obesity.

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