Gilmour, Heather, Stranges, Saverio, Kaplan, M. (Mark), Feeny, David, McFarland, Bentson, Huguet, Nathalie and Bernier, Julie (2013) Longitudinal trajectories of sleep duration in the general population. Health reports, Volume 24 (Number 11). pp. 14-20. ISSN 0840-6529.
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Abstract
Background
Sleep duration has been associated with overall health status, health behaviours, and mortality. Little is known about habitual longitudinal patterns of sleep in the general population. Furthermore, evidence about whether sleep duration has declined in recent years is contradictory.
Data and methods
The study was based on 8,673 adults aged 18 or older in 2002/2003 (cycle 5 of the National Population Health Survey) and used five selfreported biennial measurements of sleep duration spanning eight years. Multiple distinct trajectories of sleep duration were estimated using latent class growth modeling.
Results
Four modelled trajectories of sleep durationwere identified: short (11.1% of the population); low-normal (49.4%); high-normal (37.0%); and long (2.4%). The short, low-normal and highnormal sleep trajectories each exhibited a slight linear decline in hours of sleep over the eight years of follow-up. Poor sleep was predictive of trajectory group membership and associated with a decrease in sleep duration for three of the four groups. Age and sex were also significant predictors of trajectory group membership.
Interpretation
Trajectory analysis is a useful descriptive tool in the investigation of sleep duration over time.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QA Mathematics R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine |
| Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
| Library of Congress Subject Headings (LCSH): | Sleep -- Longitudinal studies, Sleep deprivation -- Longitudinal studies |
| Journal or Publication Title: | Health reports |
| Publisher: | Statistics Canada |
| ISSN: | 0840-6529 |
| Official Date: | 20 November 2013 |
| Dates: | Date Event 20 November 2013 Published |
| Volume: | Volume 24 |
| Number: | Number 11 |
| Page Range: | pp. 14-20 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| URI: | https://wrap.warwick.ac.uk/58877/ |
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