Evidence map›Paper›PMID 30707727›Full record

ArticlePloS one2019

The association between exposure to different aspects of shift work and metabolic risk factors in health care workers, and the role of chronotype.

Bette Loef, Debbie van Baarle, Allard J van der Beek, Piet K Beekhof, Linda W van Kerkhof, Karin I Proper

Abstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

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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

6 authors.

Bette LoefCenter for Nutrition, Prevention and Health Services, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
Debbie van BaarleCenter for Infectious Diseases Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
Allard J van der BeekDepartment of Public and Occupational Health, Amsterdam Public Health research institute, VU University Medical Center, Amsterdam, The Netherlands.
Piet K BeekhofCenter for Health Protection, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
Linda W van KerkhofCenter for Health Protection, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
Karin I ProperCenter for Nutrition, Prevention and Health Services, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveShift work has been linked to cardio-metabolic diseases, but insight into different shift work-related aspects and chronotype of shift workers and their relation with metabolic risk factors is limited. This study examined the association between current shift work status, frequency and duration of night shift work, chronotype, and metabolic risk factors in a population of health care workers.

methodsAnthropometrics, questionnaires, and blood samples were collected from 503 shift working and 93 non-shift working health care workers employed in hospitals. Body mass index, waist circumference, cholesterol (total, HDL, LDL), triglycerides, and high-sensitivity C-reactive protein were measured. Associations of current shift work, frequency (non-night shift worker, 1-2, 3-4, ≥5 night shifts/month) and duration of night shift work (non-night shift workers, <10, 10-19, ≥20 years), and shift workers' chronotype, with metabolic risk factors were studied using linear regression analysis.

resultsCompared to non-shift workers, shift workers' total cholesterol level was 0.38 mmol/L lower (95%-CI = -0.73 --0.04) and LDL cholesterol was 0.34 mmol/L lower (95%-CI = -0.60 --0.08). For all other metabolic risk factors, no differences were found. The association between shift work and LDL cholesterol was especially found among shift workers working night shifts for ≥20 years (B = -0.49 (95%-CI = -0.78 --0.19)). No differences were found for night shift frequency and chronotype.

conclusionIn this population of health care workers employed in hospitals, no evidence for differences in metabolic risk factors was observed that could underlie a link between shift work and cardio-metabolic diseases. Further research using different aspects of shift work to study the association with metabolic risk factors is recommended.

Indexed as

Shift Work ScheduleAdultBody Mass IndexCase-Control StudiesCholesterolCholesterol, LDLCircadian RhythmC-Reactive ProteinFemaleHealth PersonnelHospitalsHumansMaleMetabolic DiseasesMiddle AgedOccupational HealthCholesterolCholesterol, LDLC-Reactive ProteinTriglycerides

Identifiers

PMID30707727
PMCPMC6358078

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Registered trials

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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.