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Open Access

Peer-reviewed

Research Article

Direct Measurements of Smartphone Screen-Time: Relationships with Demographics and Sleep

  • Matthew A. Christensen,

    Affiliation Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, California, United States of America

    ⨯
  • Laura Bettencourt,

    Affiliation Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America

    ⨯
  • Leanne Kaye,

    Affiliation Ginger.io Incorporated, San Francisco, California, United States of America

    ⨯
  • Sai T. Moturu,

    Affiliation Ginger.io Incorporated, San Francisco, California, United States of America

    ⨯
  • Kaylin T. Nguyen,

    Affiliation Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, California, United States of America

    ⨯
  • Jeffrey E. Olgin,

    Affiliation Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, California, United States of America

    ⨯
  • Mark J. Pletcher,

    Affiliation Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America

    ⨯
  • Gregory M. Marcus

    * E-mail: marcusg@medicine.ucsf.edu

    Affiliation Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, California, United States of America

    ⨯

Direct Measurements of Smartphone Screen-Time: Relationships with Demographics and Sleep

  • Matthew A. Christensen, 
  • Laura Bettencourt, 
  • Leanne Kaye, 
  • Sai T. Moturu, 
  • Kaylin T. Nguyen, 
  • Jeffrey E. Olgin, 
  • Mark J. Pletcher, 
  • Gregory M. Marcus
PLOS
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  • Published: November 9, 2016
  • https://doi.org/10.1371/journal.pone.0165331
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Subject Areas
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For more information about PLOS Subject Areas, click here.

We want your feedback. Do these Subject Areas make sense for this article? Click the target next to the incorrect Subject Area and let us know. Thanks for your help!

  • Sleep  

    Is the Subject Area "Sleep" applicable to this article?

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  • Cell phones  

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  • Apps  

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  • Health screening  

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  • Sleep apnea  

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  • Linear regression analysis  

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  • Coronary heart disease  

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  • Surveys  

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