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Test–retest reliability of two consecutive mean sleep latency tests in patients with hypersomnia

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Abstract

Reliability of mean sleep latency testing (MSLT) over consecutive days in patients with hypersomnia is unknown. We reviewed MSLTs of patients with hypersomnia without cataplexy who underwent our two consecutive MSLT protocol (N = 29). Average MSLs were 10.9 and 10.9 min for day 1 and 2, respectively. Agreement for pathological hypersomnia (defined as MSL ≤8 min) between MSLT days showed k = 0.85 for all (N = 29) and k = 0.76 for those without sleep apnea (N = 20). In patients with subjective complaints of hypersomnia, a single MSLT is sufficient (vs. addition of second day MSLT) in the setting of carefully implemented protocol controlling for potential confounding variables.

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Acknowledgements

This work was partly supported by National Institutes of Health Grant T32 HL0 69764, granted to Dr. Kwon.

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Authors and Affiliations

  1. Department of Medicine, University of Virginia, PO Box 800158, 1215 Lee Street, Charlottesville, VA, 22908, USA

    Younghoon Kwon & Yeilim Cho

  2. Minnesota Regional Sleep Disorders Center, Hennepin County Medical Center, 701 Park Avenue South, Minneapolis, MN, 55415, USA

    Younghoon Kwon, Louis Kazaglis, Michael J. Howell & Mark W. Mahowald

  3. Fairview Sleep, Fairview Health Systems, 606 24th Ave S., Suite 102, Minneapolis, MN, 55454, USA

    Louis Kazaglis & Michael J. Howell

  4. Department of Neurology, University of Minnesota, 420 Delaware Street SE, A-395 Mayo Memorial Building, Minneapolis, MN, 55455, USA

    Louis Kazaglis & Michael J. Howell

Authors
  1. Younghoon Kwon
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  2. Louis Kazaglis
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  3. Yeilim Cho
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  4. Michael J. Howell
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  5. Mark W. Mahowald
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Correspondence to Younghoon Kwon.

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Kwon, Y., Kazaglis, L., Cho, Y. et al. Test–retest reliability of two consecutive mean sleep latency tests in patients with hypersomnia. Sleep Biol. Rhythms 15, 337–339 (2017). https://doi.org/10.1007/s41105-017-0116-8

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  • DOI: https://doi.org/10.1007/s41105-017-0116-8

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