ArticleJournal of affective disorders2018
Subjective versus objective evening chronotypes in bipolar disorder.
Article in Journal of affective disorders, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.
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Who cites it
19 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Social and circadian rhythm dysregulation and suicide: A systematic review and meta-analysis.Neuroscience and biobehavioral reviews · 2024Pooled it
- Toward a Digital Future in Bipolar Disorder Assessment: A Systematic Review of Disruptions in the Rest-Activity Cycle as Measured by Actigraphy.Frontiers in psychiatry · 2022Pooled it
- Review
- Latent brain subtypes of chronotype reveal unique behavioral and health profiles across population cohorts.Nature communications · 2025Article
- Metabolic plasticity: an evolutionary perspective on metabolic and circadian dysregulation in bipolar disorder.Molecular psychiatry · 2025Review
- Role of chronotype in depression.World journal of psychiatry · 2025Review
- Multimodal population study reveals the neurobiological underpinnings of chronotype.Nature human behaviour · 2025Article
- Chronotype, cognitive outcomes, and neural dynamics: recent evidence and potential mechanisms with implications for perioperative period.Frontiers in neuroscience · 2025Review
- Underlying biological mechanisms of emotion dysregulation in bipolar disorder.Frontiers in psychiatry · 2025Review
- Putative Risk Biomarkers of Bipolar Disorder in At-risk Youth.Neuroscience bulletin · 2024Review
- Sleep quality mediates the association between chronotype and mental health in young Indian adults.Npj mental health research · 2024Article
- Exploratory Study on the Associations between Lifetime Post-Traumatic Stress Spectrum, Sleep, and Circadian Rhythm Parameters in Patients with Bipolar Disorder.International journal of environmental research and public health · 2023Article
- Registration of 24-hour accelerometric rest-activity profiles and its application to human chronotypes.Biological rhythm research · 2022Article
- Chronotype, circadian rhythm, and psychiatric disorders: Recent evidence and potential mechanisms.Frontiers in neuroscience · 2022Review
- Self-reported sleep quality is more closely associated with mental and physical health than chronotype and sleep duration in young adults: A multi-instrument analysis.Journal of sleep research · 2021Article
- Sleep and Circadian Rhythm Disorder in Bipolar Affective Disorder.Current topics in behavioral neurosciences · 2021Article
- Daytime midpoint as a digital biomarker for chronotype in bipolar disorder.Journal of affective disorders · 2018Article
- Chronotype and Mental Health: Recent Advances.Current psychiatry reports · 2018Review
- Chronotype and Psychiatric Disorders.Current sleep medicine reports · 2018Review
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
backgroundDisturbed sleep timing is common in bipolar disorder (BD). However, most research is based upon self-reports. We examined relationships between subjective versus objective assessments of sleep timing in BD patients versus controls.
methodsWe studied 61 individuals with bipolar I or II disorder and 61 healthy controls. Structured clinical interviews assessed psychiatric diagnoses, and clinician-administered scales assessed current mood symptom severity. For subjective chronotype, we used the Composite Scale of Morningness (CSM) questionnaire, using original and modified (1, ¾, ⅔, and ½ SD below mean CSM score) thresholds to define evening chronotype. Objective chronotype was calculated as the percentage of nights (50%, 66.7%, 75%, or 90% of all nights) with sleep interval midpoints at or before (non-evening chronotype) vs. after (evening chronotype) 04:15:00 (4:15:00a.m.), based on 25-50 days of continuous actigraph data.
resultsBD participants and controls differed significantly with respect to CSM mean scores and CSM evening chronotypes using modified, but not original, thresholds. Groups also differed significantly with respect to chronotype based on sleep interval midpoint means, and based on the threshold of 75% of sleep intervals with midpoints after 04:15:00. Subjective and objective chronotypes correlated significantly with one another. Twenty-one consecutive intervals were needed to yield an evening chronotype classification match of ≥ 95% with that made using the 75% of sleep intervals threshold. LIMITATIONS: Limited sample size/generalizability.
conclusionsSubjective and objective chronotype measurements were correlated with one another in participants with BD. Using population-specific thresholds, participants with BD had a later chronotype than controls.
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