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Objective sleep duration and health in elderly Russians

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  • Maria A. Shkolnikova

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Blake Aber
  • Maxine Weinstein

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Luobov´ Kravtsova

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Svetlana A. Shalnova

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Vladimir M. Shkolnikov

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • James W. Vaupel

    (Max Planck Institute for Demographic Research, Rostock, Germany)

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    Abstract

    Objectives - We examine the relationship between sleep duration and health in the high mortality context of Russia. Methods - Night and daytime sleep durations are based on self-reports and 24-hour heart rate trends (Holter monitoring). The sample of 201 individuals (Holter data for 185) is drawn from the Moscow Lipid Research Clinics cohort, followed up since 1975-77. Field-work occurred in 2002-03. Results - Although objective and reported mean sleep are similar, there are significant intra-individual differences. Significant associations are found between objective sleep and health: longer sleep corresponds to lower grip strength, poorer self-rated health and immediate recall, and higher mortality risk score. No significant relationships are found for subjective sleep. Conclusions - We provide the first evidence of an association between long sleep and worse health outcomes among elderly Russians. Predictive power increases if objective sleep measures are used, a consideration which is especially important in small studies.

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    File URL: http://www.demogr.mpg.de/papers/working/wp-2006-009.pdf
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    Bibliographic Info

    Paper provided by Max Planck Institute for Demographic Research, Rostock, Germany in its series MPIDR Working Papers with number WP-2006-009.

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    Length: 20 pages
    Date of creation: Mar 2006
    Date of revision:
    Handle: RePEc:dem:wpaper:wp-2006-009

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    Web page: http://www.demogr.mpg.de/

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