Evidence map›Paper›PMID 38907030›Full record

Observational studyInternational archives of occupational and environmental health2024

Sleep duration and quality in permanent night work: an observational field study.

Kirsten Nabe-Nielsen, Ann Dyreborg Larsen, Anne Emily Saunte Fiehn Arup, Mette Sallerup, Vivi Schlünssen, Åse Marie Hansen, Anne Helene Garde

Abstract readObservational Study
PubMed Full text at PMC Publisher
In one paragraph

Observational study in International archives of occupational and environmental health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

  1. Spatiotemporal Dynamics of Urban Population Based on Mobile Signaling Data and Its Correlation With Wastewater Quantity and Quality.Water environment research : a research publication of the Water Environment Federation · 2026
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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

7 authors.

Kirsten Nabe-NielsenThe National Research Centre for the Working Environment, Lersø Parkallé 105, 2100, Copenhagen, Denmark. knn@nfa.dk.ORCID 0000-0002-4298-1420
Ann Dyreborg LarsenThe National Research Centre for the Working Environment, Lersø Parkallé 105, 2100, Copenhagen, Denmark.ORCID 0000-0002-3587-2998
Anne Emily Saunte Fiehn ArupThe National Research Centre for the Working Environment, Lersø Parkallé 105, 2100, Copenhagen, Denmark.ORCID 0009-0005-8394-8351
Mette SallerupThe National Research Centre for the Working Environment, Lersø Parkallé 105, 2100, Copenhagen, Denmark.ORCID 0000-0003-2660-514X
Vivi SchlünssenDepartment of Public Health, Danish Ramazzini Centre, Research Unit for Environment, Occupation and Health, Bartholins Allé 2, 8000, Aarhus C, Denmark.ORCID 0000-0003-4915-1734
Åse Marie HansenThe National Research Centre for the Working Environment, Lersø Parkallé 105, 2100, Copenhagen, Denmark.ORCID 0000-0002-4075-3918
Anne Helene GardeThe National Research Centre for the Working Environment, Lersø Parkallé 105, 2100, Copenhagen, Denmark.ORCID 0000-0002-1553-2291

Funding

The Danish Working Environment Research Fund 10-2011-09The Danish Working Environment Research Fund 23-2017-09
6 · The paper itself

Abstract

purposePermanent night workers conceivably show better adaptation of circadian rhythms to night work than shift workers and therefore better possibilities of obtaining sufficient sleep of good quality after night shifts. We investigated the effect of night shifts including number of consecutive shifts on sleep among self-selected permanent night workers, and studied if the effect of night shifts differed between morning and evening types and compared with 3-shift workers.

methodsThe study population included 90 permanent night workers followed for 14 days (warehouse workers, 1228 observation days, 80% males). For comparison, we included 70 3-shift workers followed for 26 days (police officers, 1774 observation days, 100% men). Total sleep time (TST), primary sleep duration (PSD), and sleep efficiency were assessed by actigraphy. Measures of sleep quality and diurnal type were self-reported.

resultsAmong permanent night workers, TST, PSD, difficulties falling asleep, disturbed sleep, and the number of awakenings decreased after night shifts compared with days without night work. Sleep efficiency, difficulties awakening, and non-refreshing sleep increased. More consecutive night shifts were associated with shorter TST and PSD. Sleep outcomes did not differ by diurnal type. Permanent night workers had fewer awakenings after night shifts than 3-shift workers, but no other differences were observed.

conclusionThis study does not provide evidence that supports recommendation of permanent night work to reduce adverse effects of night shifts on sleep. A limited number of consecutive night shifts is recommended to reduce accumulation of sleep debt.

Indexed as

ActigraphyCircadian RhythmWork Schedule ToleranceAdultFemaleHumansMaleMiddle AgedShift Work ScheduleSleepSleep Disorders, Circadian RhythmSleep DurationSleep QualityTime FactorsChronotypeConsecutive night shiftsIndustrial workerIrregular working hoursPoliceShift work

Identifiers

PMID38907030
PMCPMC11416425

What OpenQuestion holds

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LicenceCC BY
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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.