Evidence map›Paper›PMID 30511341›Full record

ArticleInternational archives of occupational and environmental health2019

Sleep and alertness in shift work disorder: findings of a field study.

Päivi Vanttola, Mikko Härmä, Katriina Viitasalo, Christer Hublin, Jussi Virkkala, Mikael Sallinen, Kati Karhula, Sampsa Puttonen

Abstract read
In one paragraph

Article in International archives of occupational and environmental health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 3 pooled it
–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

20 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. The impact of shift work schedules on PVT performance in naturalistic settings: a systematic review.International archives of occupational and environmental health · 2021
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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

8 authors.

Päivi VanttolaFinnish Institute of Occupational Health, Työterveyslaitos, PO Box 40, 00032, Helsinki, Finland. paivi.vanttola@ttl.fi.ORCID http://orcid.org/0000-0001-6746-0659
Mikko HärmäFinnish Institute of Occupational Health, Työterveyslaitos, PO Box 40, 00032, Helsinki, Finland.
Katriina ViitasaloFinnair Health Services, Finnair, PO Box 15, 01053, Vantaa, Finland.
Christer HublinFinnish Institute of Occupational Health, Työterveyslaitos, PO Box 40, 00032, Helsinki, Finland.
Jussi VirkkalaFinnish Institute of Occupational Health, Työterveyslaitos, PO Box 40, 00032, Helsinki, Finland.
Mikael SallinenFinnish Institute of Occupational Health, Työterveyslaitos, PO Box 40, 00032, Helsinki, Finland.
Kati KarhulaFinnish Institute of Occupational Health, Työterveyslaitos, PO Box 40, 00032, Helsinki, Finland.
Sampsa PuttonenFinnish Institute of Occupational Health, Työterveyslaitos, PO Box 40, 00032, Helsinki, Finland.

Funding

NordForsk 74809Työsuojelurahasto 111102
6 · The paper itself

Abstract

purposeAlthough shift work disorder (SWD) affects a major part of the shift working population, little is known about its manifestation in real life. This observational field study aimed to provide a detailed picture of sleep and alertness among shift workers with a questionnaire-based SWD, by comparing them to shift workers without SWD during work shifts and free time.

methodsSWD was determined by a questionnaire. Questionnaires and 3-week field monitoring, including sleep diaries, actigraphy, the Karolinska Sleepiness Scale (KSS), EEG-based sleep recordings, and Psychomotor Vigilance Tasks (PVT), were used to study 22 SWD cases and 9 non-SWD workers.

resultsThe SWD group had a shorter subjective total sleep time and greater sleep debt before morning shifts than the non-SWD group. Unlike the non-SWD group, the SWD group showed little compensatory sleep on days off. The SWD group had lower objective sleep efficiency and longer sleep latency on most days, and reported poorer relaxation at bedtime and sleep quality across all days than the non-SWD group. The SWD group's average KSS-sleepiness was higher than the non-SWD group's sleepiness at the beginning and end of morning shifts and at the end of night shifts. The SWD group also had more lapses in PVT at the beginning of night shifts than the non-SWD group.

conclusionsThe results indicate that SWD is related to disturbed sleep and alertness in association with both morning and night shifts, and to less compensatory sleep on days off. SWD seems to particularly associate with the quality of sleep.

Indexed as

ActigraphyAdultAttentionAviationElectroencephalographyFemaleFinlandHumansLeisure ActivitiesMaleMiddle AgedPsychomotor PerformanceSleepSleep Disorders, Circadian RhythmSurveys and QuestionnairesWork Schedule ToleranceCircadian rhythm disordersInsomniaShift workSleep diarySleepiness

Identifiers

PMID30511341
PMCPMC6435614

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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.