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Prevalence rates of frequent dream recall and nightmares by age, gender and sleep duration in 16 countries

2025-04-23Research article Open access
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dc.contributor.authorBolstad, Courtney J.
dc.contributor.authorBjorvatn, Bjørn
dc.contributor.authorChan, Ngan Yin
dc.contributor.authorChung, Frances
dc.contributor.authorDauvilliers, Yves
dc.contributor.authorDe Gennaro, Luigi
dc.contributor.authorEspie, Colin A.
dc.contributor.authorHolzinger, Brigitte
dc.contributor.authorInoue, Yuichi
dc.contributor.authorKorman, Maria
dc.contributor.authorKoscec Bjelajac, Adrijana
dc.contributor.authorLandtblom, Anne Marie
dc.contributor.authorMacêdo, Tainá
dc.contributor.authorMatsui, Kentaro
dc.contributor.authorMerikanto, Ilona
dc.contributor.authorMorin, Charles M.
dc.contributor.authorMota-Rolim, Sérgio
dc.contributor.authorPenzel, Thomas
dc.contributor.authorPlazzi, Giuseppe
dc.contributor.authorReis, Cátia
dc.contributor.authorScarpelli, Serena
dc.contributor.authorWing, Yun Kwok
dc.contributor.authorNadorff, Michael R.
dc.date.accessioned2025-09-17T06:39:45Z
dc.date.available2025-09-17T06:39:45Z
dc.date.issued2025-04-23
dc.description.abstractThe present study aimed to describe the prevalence rates of frequent (i.e., at least weekly) dream recall and nightmares with consideration for differences in age, gender and sleep duration in 16 countries using equivalent assessment methods. The study sample included 15,854 participants (69.9% women) aged 18–99 years (M = 42.39, SD = 16.43) collected by the International COVID-19 Sleep Study collaboration, which used a unified online survey to collect data from May to November 2021 across 16 countries. Participants provided demographic information as well as self-reported estimates of their dream recall and nightmare frequency and sleep duration in 2021 and retrospectively for 2019. Frequent dream recall occurred in 54.0% of participants in 2021 and 51.1% in 2019. Frequent nightmares were reported by 11.0% of participants in 2021 and 6.9% in 2019. Ad hoc regression models found dream recall and sleep duration to have a linear relation, whereas nightmare frequency demonstrated a quadratic relation to sleep duration. Frequent dream recall and nightmare prevalence rates are reported for each of the 16 study countries by age, gender and sleep duration. This is the first multi-continent study to estimate frequent dream recall and nightmare prevalence, which both provides updated prevalence rates during the COVID-19 pandemic as well as extends existing knowledge to previously never studied countries.eng
dc.identifier.citationBolstad, C. J., Bjorvatn, B., Chan, N. Y., & Chung, F. et al. (in press). Prevalence rates of frequent dream recall and nightmares by age, gender and sleep duration in 16 countries. Journal of Sleep Research, Article e70070. https://doi.org/10.1111/jsr.70070
dc.identifier.doi10.1111/jsr.70070
dc.identifier.eid105003224785
dc.identifier.issn0962-1105
dc.identifier.other60f25bae-df96-4f91-a3ac-b770da482cd5
dc.identifier.pmid40267939
dc.identifier.urihttp://hdl.handle.net/10400.14/54989
dc.identifier.wos001472720800001
dc.language.isoeng
dc.peerreviewedyes
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectBad dreams
dc.subjectCOVID-19
dc.subjectDisturbing dreams
dc.subjectDreaming
dc.titlePrevalence rates of frequent dream recall and nightmares by age, gender and sleep duration in 16 countrieseng
dc.typeresearch article
dspace.entity.typePublication
oaire.citation.titleJournal of Sleep Research
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85

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