ArticleJournal of sleep research2026
Eveningness in Middle-Aged and Older Adults: Associations With Sleep, Internalising Symptoms, and Alertness.
Article in Journal of sleep research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Eveningness in Middle-Aged and Older Adults: Associations With Sleep, Internalising Symptoms, and Alertness.Journal of sleep research · 2026Article
- Sleep disorders impact hormonal regulation: unravelling the relationship among sleep disorders, hormones and metabolic diseases.Diabetology & metabolic syndrome · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
Evening chronotype, characterised by a preference for later circadian timing, can present challenges in societal activities oriented towards morning schedules. This study investigates the link between chronotype and sleep, alertness, and internalising symptoms in middle-aged and older adults. The sample comprised 652 healthy adults (ages 35-98) free of sleep, psychiatric, or neurological disorders. All participants completed a 3-min version of the Psychomotor Vigilance Test both in the morning and evening, where the median reaction time served as a measure of behavioural alertness. Additionally, participants completed: (1) the Morningness-Eveningness Questionnaire for chronotype, (2) the Stanford Sleepiness Scale for subjective alertness, (3) the Pittsburgh Sleep Quality Index for sleep disturbance, and (4) the Mood and Anxiety Symptom Questionnaire for depression-specific anhedonia, anxiety-specific anxious arousal, and the common internalising factor, general distress. Results indicated that endorsing an evening chronotype provided a transdiagnostic risk factor for general distress, anhedonia, anxious arousal, as well as sleep disturbance and morning subjective sleepiness across middle-aged and older adults. Evening chronotypes showed higher behavioural alertness in the evening, compared to both intermediate and morning chronotypes. These results suggest that chronotype should be considered when promoting healthy ageing and optimal performance.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.