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)
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.
Download Info
To download:
If you experience problems downloading a file, check if you have the
proper application to
view it first. Information about this may be contained
in the File-Format links below. In case of further problems read
the IDEAS help
page. Note that these files are not on the IDEAS
site. Please be patient as the files may be large.
Publisher Info
Paper provided by Max Planck Institute for Demographic Research, Rostock, Germany in its series MPIDR Working Papers with number
WP-2006-009.
Did you know? You can include your works in the database easily by uploading them on the Munich Personal RePEc Archive (MPRA) if you do not have access to an institutional RePEc archive.