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Unclear Insomnia Concept in Randomized Controlled Trials and Systematic Reviews: A Meta-Epidemiological Study

Author

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  • Masahiro Banno

    (Department of Psychiatry, Seichiryo Hospital, Tsurumai 4-16-27, Showa-ku, Nagoya 466-0064, Japan
    Department of Psychiatry, Nagoya University Graduate School of Medicine, Tsurumai-cho 65, Showa-ku, Nagoya 466-8560, Japan
    Scientific Research WorkS Peer Support Group (SRWS-PSG), Koraibashi, Chuo-ku, Osaka 541-0043, Japan)

  • Yasushi Tsujimoto

    (Scientific Research WorkS Peer Support Group (SRWS-PSG), Koraibashi, Chuo-ku, Osaka 541-0043, Japan
    Department of Health Promotion and Human Behavior, Kyoto University Graduate School of Medicine/School of Public Health, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
    Oku Medical Clinic, Shimmori 7-1-4, Asahi-ku, Osaka 535-0022, Japan)

  • Kunihiro Kohmura

    (Department of Psychiatry, Seichiryo Hospital, Tsurumai 4-16-27, Showa-ku, Nagoya 466-0064, Japan)

  • Eisuke Dohi

    (Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Ogawahigashi-cho 4-1-1, Kodaira 187-8502, Japan)

  • Shunsuke Taito

    (Scientific Research WorkS Peer Support Group (SRWS-PSG), Koraibashi, Chuo-ku, Osaka 541-0043, Japan
    Division of Rehabilitation, Department of Clinical Practice and Support, Hiroshima University Hospital, 1-2-3, Kasumi, Minami-ku, Hiroshima 734-8551, Japan)

  • Hidehiro Someko

    (Scientific Research WorkS Peer Support Group (SRWS-PSG), Koraibashi, Chuo-ku, Osaka 541-0043, Japan
    Department of General Internal Medicine, Asahi General Hospital, I 1326, Asahi 289-2511, Japan)

  • Yuki Kataoka

    (Scientific Research WorkS Peer Support Group (SRWS-PSG), Koraibashi, Chuo-ku, Osaka 541-0043, Japan
    Department of Internal Medicine, Kyoto Min-iren Asukai Hospital, Tanakaasukaicyo 89, Sakyo-ku, Kyoto 606-8226, Japan
    Section of Clinical Epidemiology, Department of Community Medicine, Kyoto University Graduate School of Medicine, Shogoin Kawara-cho 54, Sakyo-ku, Kyoto 606-8501, Japan
    Department of Healthcare Epidemiology, Kyoto University Graduate School of Medicine/School of Public Health, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan)

Abstract

There are two possible ways to conceptualize the term “insomnia”: insomnia disorder and insomnia symptoms, which are often poorly reported. The purpose of this study was to examine the proportion of randomized controlled trials (RCTs) and systematic reviews (SRs) that mention insomnia in their abstracts and cannot distinguish between insomnia disorder and insomnia symptoms from the abstract. We included RCT and SR articles that included the word “insomnia” in the methods or results sections of their structured abstracts, published after 2010. We searched PubMed using English language restrictions on 10 March 2022. From 1580 PubMed articles, we obtained 100 random samples each for eligible RCTs and SRs. The unclear insomnia concept accounted for 88% of the RCT abstracts and 94% of the SR abstracts. Among the RCT and SR abstracts with unclearness, the concept of insomnia was unclear in 27% of RCTs and 57% of SRs after investigating the full text. The concept of insomnia has been unclear in many RCTs and SRs abstracts. The authors of RCTs and SRs are recommended to state “insomnia disorder” or “insomnia symptoms” in the methods and results sections of their abstracts.

Suggested Citation

  • Masahiro Banno & Yasushi Tsujimoto & Kunihiro Kohmura & Eisuke Dohi & Shunsuke Taito & Hidehiro Someko & Yuki Kataoka, 2022. "Unclear Insomnia Concept in Randomized Controlled Trials and Systematic Reviews: A Meta-Epidemiological Study," IJERPH, MDPI, vol. 19(19), pages 1-10, September.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:19:p:12261-:d:926587
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    References listed on IDEAS

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    1. Matthew J Page & Larissa Shamseer & Douglas G Altman & Jennifer Tetzlaff & Margaret Sampson & Andrea C Tricco & Ferrán Catalá-López & Lun Li & Emma K Reid & Rafael Sarkis-Onofre & David Moher, 2016. "Epidemiology and Reporting Characteristics of Systematic Reviews of Biomedical Research: A Cross-Sectional Study," PLOS Medicine, Public Library of Science, vol. 13(5), pages 1-30, May.
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