Evidence map›Paper›PMID 29913073›Full record

ArticleChronobiology international2018

Chronotype and environmental light exposure in a student population.

Kate Porcheret, Lucien Wald, Lin Fritschi, Menno Gerkema, Marijke Gordijn, Martha Merrrow, Shantha M W Rajaratnam, Daniel Rock, Tracey L Sletten, Guy Warman and 3 more

Open access · hybridAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Chronobiology international, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.2field-weighted citation impact, top 13% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 59 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 9 institutions in 6 countries.

Kate Porchereta Sleep and Circadian Neuroscience Institute (SCNi), Nuffield Department of Clinical Neurosciences , University of Oxford , Oxford , UK.
Lucien Waldb Centre for Observation, Impacts, Energy , MINES ParisTech, PSL Research University , Paris , France.
Lin Fritschic School of Public Health , Curtin University , Perth , Australia.
Menno Gerkemad Chronobiology unit, Groningen Institute for Evolutionary Life Sciences , University of Groningen , Groningen , The Netherlands.
Marijke Gordijnd Chronobiology unit, Groningen Institute for Evolutionary Life Sciences , University of Groningen , Groningen , The Netherlands.
Martha Merrrowf Molecular Chronobiology , Institute of Medical Psychology, LMU Munich , Munich , Germany.
Shantha M W Rajaratnamg Monash Institute of Cognitive and Clinical Neurosciences and School of Psychological Sciences , Monash University , Melbourne , Australia.
Daniel Rockh WA Primary Health Alliance , Perth , Australia.
Tracey L Sletteng Monash Institute of Cognitive and Clinical Neurosciences and School of Psychological Sciences , Monash University , Melbourne , Australia.
Guy Warmanj Chronobiology Group, Department of Anaesthesiology, School of Medicine, Faculty of Medical and Health Sciences , University of Auckland , Auckland , New Zealand.
Katharina Wulffa Sleep and Circadian Neuroscience Institute (SCNi), Nuffield Department of Clinical Neurosciences , University of Oxford , Oxford , UK.
Till Roennebergf Molecular Chronobiology , Institute of Medical Psychology, LMU Munich , Munich , Germany.
Russell G Fostera Sleep and Circadian Neuroscience Institute (SCNi), Nuffield Department of Clinical Neurosciences , University of Oxford , Oxford , UK.
Ludwig-Maximilians-Universität München · DEMonash University · AUOxford Centre for Computational Neuroscience · GBUniversity of Groningen · NLCurtin University · AUGovernment of Western Australia Department of Health · AUParisTech · FRUniversity of Auckland · NZUniversity of Oxford · GB

Funding

Department of Health A90305Department of Health A92181Wellcome TrustWellcome Trust 098461/Z/12/ZWellcome Trust 106174/Z/14/Z
6 · The paper itself

Abstract

In humans and most other species, changes in the intensity and duration of light provide a critical set of signals for the synchronisation of the circadian system to the astronomical day. The timing of activity within the 24 h day defines an individual's chronotype, i.e. morning, intermediate or evening type. The aim of this study was to investigate the associations between environmental light exposure, due to geographical location, on the chronotype of university students. Over 6 000 university students from cities in the Northern Hemisphere (Oxford, Munich and Groningen) and Southern Hemisphere (Perth, Melbourne and Auckland) completed the Munich ChronoType Questionnaire. In parallel, light measures (daily irradiance, timing of sunrise and sunset) were compiled from satellite or ground stations at each of these locations. Our data shows that later mid-sleep point on free days (corrected for oversleep on weekends MFS

Indexed as

Circadian RhythmLightAdolescentAdultEnvironmentFemaleHumansMaleStudentsUniversitiesYoung AdultChronotypeDaily irradianceLightMCTQStudents

Identifiers

PMID29913073
PMCPMC6234547
OpenAlexW2808747437

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.