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      <marc:subfield code="a">Gilmour, Heather L. </marc:subfield>
      <marc:subfield code="q">(Heather Lynne), </marc:subfield>
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      <marc:subfield code="a">Longitudinal trajectories of sleep duration in the general population / </marc:subfield>
      <marc:subfield code="c">by Heather Gilmour, Saverio Stranges, Mark Kaplan, David Feeny, Bentson McFarland, Nathalie Huguet and Julie Bernier.</marc:subfield>
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      <marc:subfield code="c">November 2013.</marc:subfield>
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      <marc:subfield code="c">©2013</marc:subfield>
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      <marc:subfield code="a">1 online resource (pages 14-20) : </marc:subfield>
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      <marc:subfield code="a">Health reports, </marc:subfield>
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      <marc:subfield code="v">v. 24, no. 11, [2]</marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Trajectoires longitudinales de la durée du sommeil dans la population générale.</marc:subfield>
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      <marc:subfield code="a">ISSN of series supplied from ISSN Portal.</marc:subfield>
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      <marc:subfield code="a">"Component of Statistics Canada catalogue no. 82-003-X, Health Reports."</marc:subfield>
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      <marc:subfield code="a">"Article."</marc:subfield>
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      <marc:subfield code="a">"Methodological insights."</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 19-20).</marc:subfield>
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      <marc:subfield code="a">"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. 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 self-reported biennial measurements of sleep duration spanning eight years. Multiple distinct trajectories of sleep duration were estimated using latent class growth modeling. …"--Abstract, page 14.</marc:subfield>
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      <marc:subfield code="t">Trajectoires longitudinales de la durée du sommeil dans la population générale / </marc:subfield>
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      <marc:subfield code="v">v. 24, no. 11, [2].</marc:subfield>
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