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  1. Article ; Online: Mapping insomnia symptoms and circadian preferences to mental health problems in men and women across the lifespan.

    Sarsembayeva, Dina / Schreuder, Marieke J / Hartman, Catharina A

    Psychiatry research

    2023  Volume 331, Page(s) 115689

    Abstract: This study identified subgroups in the general population based on combinations in three night-time insomnia symptoms and four dimensions of circadian preferences ("sleep profiles") and investigated the associations between sleep profiles and nine common ...

    Abstract This study identified subgroups in the general population based on combinations in three night-time insomnia symptoms and four dimensions of circadian preferences ("sleep profiles") and investigated the associations between sleep profiles and nine common mental health problems. The data came from the Lifelines cohort add-on study "Comorbid Conditions of ADHD" and included 37,716 individuals (aged 4-91 years) from the Dutch general population who completed a digital survey. Latent profile analysis was used to identify sleep profiles in twelve age-sex subgroups. Linear regression was used to investigate whether sleep profiles differ in mental health problems. Participants were classified into three sleep profiles: "Healthy Larks", who had early circadian preferences and no insomnia symptoms; "Sleepy Owls" with late circadian preferences and nonrestorative sleep; and "Sleepless Doves" with intermediate circadian preferences and severe insomnia symptoms. Compared to "Healthy Larks", all mental health problems were significantly more severe in "Sleepy Owls" and even worse in "Sleepless Doves". These associations were similar in men and women but weakened with age. However, "Sleepy Owls" and "Sleepless Doves" did not differ in heavy alcohol drinking, drug use, and smoking. Our findings strengthened the evidence for the universal role of healthy sleep in mental wellbeing.
    MeSH term(s) Male ; Humans ; Female ; Sleep Initiation and Maintenance Disorders/epidemiology ; Mental Health ; Longevity ; Attention Deficit Disorder with Hyperactivity/psychology ; Sleep
    Language English
    Publishing date 2023-12-21
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 445361-x
    ISSN 1872-7123 ; 1872-7506 ; 0925-4927 ; 0165-1781
    ISSN (online) 1872-7123 ; 1872-7506
    ISSN 0925-4927 ; 0165-1781
    DOI 10.1016/j.psychres.2023.115689
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Nonlinear associations between insomnia symptoms and circadian preferences in the general population: Symptom-specific and lifespan differences in men and women.

    Sarsembayeva, Dina / Hartman, Catharina A / Cardoso Melo, Raniere Dener / Schreuder, Marieke J

    Sleep health

    2023  Volume 10, Issue 2, Page(s) 171–181

    Abstract: Objectives: This study investigated (non)linear associations between different eveningness characteristics (bedtime, wake time, morning affect, and peak performance time) and insomnia symptoms (difficulties initiating sleep, difficulties maintaining ... ...

    Abstract Objectives: This study investigated (non)linear associations between different eveningness characteristics (bedtime, wake time, morning affect, and peak performance time) and insomnia symptoms (difficulties initiating sleep, difficulties maintaining sleep, and nonrestorative sleep) in a large general population sample.
    Methods: The data came from digital surveys about insomnia (Minimal Insomnia Scale) and circadian preferences (Children's Chronotype Questionnaire/Composite Scale of Morningness) completed by the Dutch general population (37,389 participants aged 4-91years, 42.4% men) in the Lifelines cohort substudy Comorbid Conditions of ADHD.
    Results: Using generalized additive modeling, we found that different characteristics of eveningness related to insomnia either exponentially (later wake time/peak performance time, worse morning affect) or quadratically (early and late bedtime/midpoint of sleep). While difficulties initiating sleep and nonrestorative sleep were strongly associated with all eveningness characteristics, difficulties maintaining sleep related only to earlier bedtimes. These relationships were similar for men and women but varied partly in shapes and strengths across the lifespan. Additional analyses showed that bedtime and wake time were associated with insomnia symptoms only when their combination would result in an unusually long or short preferred time in bed.
    Conclusion: The association between eveningness and insomnia symptoms highly depends on whether eveningness is reflected by daytime performance or sleep-wake time. The pattern and strength of these associations also vary depending on age and insomnia symptom, but less so on sex. Future sleep-related research and policies relying on circadian preferences should account for the nonlinearity, dimension/symptom-related specificity and age-related differences in the association between eveningness and insomnia symptoms.
    MeSH term(s) Humans ; Sleep Initiation and Maintenance Disorders/epidemiology ; Female ; Male ; Aged ; Adolescent ; Middle Aged ; Aged, 80 and over ; Adult ; Young Adult ; Circadian Rhythm ; Child, Preschool ; Child ; Netherlands/epidemiology ; Surveys and Questionnaires ; Time Factors ; Cohort Studies ; Sex Factors ; Longevity
    Language English
    Publishing date 2023-11-25
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2813299-3
    ISSN 2352-7226 ; 2352-7218
    ISSN (online) 2352-7226
    ISSN 2352-7218
    DOI 10.1016/j.sleh.2023.10.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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