ArticleScientific reports2017
Irregular sleep/wake patterns are associated with poorer academic performance and delayed circadian and sleep/wake timing.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 310 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
310 citing papers in PubMed, 593 citations in OpenAlex.
- Trial
- Restoring circadian homeostasis is associated with immune-metabolic recovery and medium-term oncologic outcomes after rectal cancer surgery: a prospective randomized trial.Surgical endoscopy · 2026Trial
- Association between dim light melatonin onset predicted from gene expression profiles with sleep time and chronotype preference: A pilot study.Chronobiology international · 2025Trial
- The effects of insufficient sleep and adequate sleep on cognitive function in healthy adults.Sleep health · 2024Trial
- Promoting stress and anxiety recovery in older adults: assessing the therapeutic influence of biophilic green walls and outdoor view.Frontiers in public health · 2024Trial
- Trial
- Latent profiles of actigraphy-derived sleep regularity, timing, and duration in adults with type 2 diabetes: clinical and psychosocial correlates.Sleep medicine · 2026Article
- Sleep Is Integral to School Health and Adolescent Wellbeing: An Evidence-Based Call to Action.The Journal of school health · 2026Review
- Accelerometer-Derived Relative Amplitude and Midlife Cognition: A Cross-Sectional Study.medRxiv : the preprint server for health sciences · 2026Article
- Analysis of real-world eye level light exposure through spectacle lens.Npj biological timing and sleep · 2026Article
- Toward an idiographic understanding of the role of sleep-mood dynamics in adolescents' internalizing symptoms.JCPP advances · 2026Article
- Multidimensional sleep health and serious cognitive difficulty among US adolescents.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2026Article
- Article
- Sleep irregularity is associated with reduced wellbeing in patients with cirrhosis.JHEP reports : innovation in hepatology · 2026Article
- Predicting next-day suicidal urges, depression, and PTSD symptoms using ecological momentary assessments and passive sensing of sleep among military service members and veterans.Journal of affective disorders · 2026Article
- Surgeon Social Jet Lag and Patient Risk of Major Adverse Events.JAMA surgery · 2026Article
- Home-Based Tailored Light Therapy for Sleep, Mood, and Cognitive Outcomes in Mild Cognitive Impairment: A Randomized Trial.Journal of applied gerontology : the official journal of the Southern Gerontological Society · 2026Article
- Developmental trajectories of sleep in offspring of parents with mood disorders.Psychological medicine · 2026Article
- Detecting the Non-Dipper Phenotype in Adolescents Exposed to Nighttime Screen Use-Digital Chronotoxicity as a Proposed Integrative Framework: A Narrative Review of Ambulatory Blood Pressure Monitoring, Subclinical Biomarkers, and Emerging Wearable and AI-Based Screening.Diagnostics (Basel, Switzerland) · 2026Review
- Blunted light exposure amplitudes in patients with opioid use disorder.Npj biological timing and sleep · 2026Article
250 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 3 institutions in 1 country.
Funding
Abstract
The association of irregular sleep schedules with circadian timing and academic performance has not been systematically examined. We studied 61 undergraduates for 30 days using sleep diaries, and quantified sleep regularity using a novel metric, the sleep regularity index (SRI). In the most and least regular quintiles, circadian phase and light exposure were assessed using salivary dim-light melatonin onset (DLMO) and wrist-worn photometry, respectively. DLMO occurred later (00:08 ± 1:54 vs. 21:32 ± 1:48; p < 0.003); the daily sleep propensity rhythm peaked later (06:33 ± 0:19 vs. 04:45 ± 0:11; p < 0.005); and light rhythms had lower amplitude (102 ± 19 lux vs. 179 ± 29 lux; p < 0.005) in Irregular compared to Regular sleepers. A mathematical model of the circadian pacemaker and its response to light was used to demonstrate that Irregular vs. Regular group differences in circadian timing were likely primarily due to their different patterns of light exposure. A positive correlation (r = 0.37; p < 0.004) between academic performance and SRI was observed. These findings show that irregular sleep and light exposure patterns in college students are associated with delayed circadian rhythms and lower academic performance. Moreover, the modeling results reveal that light-based interventions may be therapeutically effective in improving sleep regularity in this population.
Indexed as
Identifiers
What OpenQuestion holds
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 OpenQuestion graph.