Sleep variability in delayed sleep-wake phase disorder and insomnia disorder in youth: A case-control study.

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Title: Sleep variability in delayed sleep-wake phase disorder and insomnia disorder in youth: A case-control study.
Authors: Pan Y; Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong SAR., Cheung FTW; Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong SAR; Sir Jules Thorn Sleep and Circadian Neuroscience Institute, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK., Chan JW; Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong., Chan NY; Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong., Li X; Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong SAR., Ho AWY; Department of Chemical Pathology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR., Ho CS; Department of Chemical Pathology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR., Gradisar M; WINK Sleep Pty Ltd, Adelaide, Australia., Wing YK; Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong; Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR., Li SX; Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong SAR. Electronic address: shirley.li@hku.hk.
Source: Sleep medicine [Sleep Med] 2026 Jun; Vol. 142, pp. 108859. Date of Electronic Publication: 2026 Feb 19.
Publication Type: Journal Article
Journal Info: Publisher: Elsevier Science Country of Publication: Netherlands NLM ID: 100898759 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1878-5506 (Electronic) Linking ISSN: 13899457 NLM ISO Abbreviation: Sleep Med Subsets: MEDLINE
Database: MEDLINE Ultimate
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  Data: Sleep variability in delayed sleep-wake phase disorder and insomnia disorder in youth: A case-control study.
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  Data: <searchLink fieldCode="AU" term="%22Pan+Y%22">Pan Y</searchLink>; Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong SAR.<br /><searchLink fieldCode="AU" term="%22Cheung+FTW%22">Cheung FTW</searchLink>; Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong SAR; Sir Jules Thorn Sleep and Circadian Neuroscience Institute, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.<br /><searchLink fieldCode="AU" term="%22Chan+JW%22">Chan JW</searchLink>; Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Chan+NY%22">Chan NY</searchLink>; Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Li+X%22">Li X</searchLink>; Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong SAR.<br /><searchLink fieldCode="AU" term="%22Ho+AWY%22">Ho AWY</searchLink>; Department of Chemical Pathology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR.<br /><searchLink fieldCode="AU" term="%22Ho+CS%22">Ho CS</searchLink>; Department of Chemical Pathology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR.<br /><searchLink fieldCode="AU" term="%22Gradisar+M%22">Gradisar M</searchLink>; WINK Sleep Pty Ltd, Adelaide, Australia.<br /><searchLink fieldCode="AU" term="%22Wing+YK%22">Wing YK</searchLink>; Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong; Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR.<br /><searchLink fieldCode="AU" term="%22Li+SX%22">Li SX</searchLink>; Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong SAR. Electronic address: shirley.li@hku.hk.
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  Data: <searchLink fieldCode="JN" term="%22100898759%22">Sleep medicine</searchLink> [Sleep Med] 2026 Jun; Vol. 142, pp. 108859. <i>Date of Electronic Publication: </i>2026 Feb 19.
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  Data: <i>Publisher: </i><searchLink fieldCode="PB" term="%22Elsevier+Science%22">Elsevier Science </searchLink><i>Country of Publication: </i>Netherlands <i>NLM ID: </i>100898759 <i>Publication Model: </i>Print-Electronic <i>Cited Medium: </i>Internet <i>ISSN: </i>1878-5506 (Electronic) <i>Linking ISSN: </i><searchLink fieldCode="IS" term="%2213899457%22">13899457 </searchLink><i>NLM ISO Abbreviation: </i>Sleep Med <i>Subsets: </i>MEDLINE
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        Value: 10.1016/j.sleep.2026.108859
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        Text: English
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              Text: 2026 Jun
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