ArticleBMJ open2018
Sleep quality of offshore wind farm workers in the German exclusive economic zone: a cross-sectional study.
Article in BMJ open, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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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.
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Who cites it
7 citing papers in PubMed, 12 citations in OpenAlex.
- Sleep environment is associated with sleep control in fly-in, fly-out mining shift workers.Sleep & breathing = Schlaf & Atmung · 2025Article
- Relationship between night shift and sleep problems, risk of metabolic abnormalities of nurses: a 2 years follow-up retrospective analysis in the National Nurse Health Study (NNHS).International archives of occupational and environmental health · 2023Article
- Article
- Seasickness among Icelandic seamen.PloS one · 2022Article
- Musculoskeletal pain among offshore wind industry workers: a cross-sectional study.International archives of occupational and environmental health · 2020Article
- Sleepiness of day workers and watchkeepers on board at high seas: a cross-sectional study.BMJ open · 2019Article
- The physical performance of workers on offshore wind energy platforms: is pre-employment fitness testing necessary and fair?International archives of occupational and environmental health · 2019Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo assess the quality of sleep of employees in the German offshore wind industry and to explore factors associated with poor sleep quality.
designWeb-based cross-sectional survey.
settingOffshore companies operating in wind farms within the German exclusive economic zone.
participantsWorkers with regular offshore commitments and at least 28 days spent offshore in the past year (n=268). OUTCOME MEASURES: Sleep quality in the past 4 weeks, troubles falling asleep or sleeping through in the past 4 weeks, differences in sleep quality between offshore deployments and onshore leaves.
resultsHaving problems with sleep onset was reported by 9.5% of the respondents. 16.5% reported troubles with maintaining sleep three or more times per week. The overall quality of sleep was rated as very bad by only 1.7% of the participants. 47.9% of the workers reported their quality of sleep to be worse during offshore commitments than when being onshore. Higher levels of exposition to noise, vibrations and poor air quality were associated with sleeping troubles and poorer sleep quality. Sharing the sleep cabin with colleagues was associated with troubles sleeping through. No association was found for working in rotating shifts and for regularity of the offshore commitments.
conclusionsWorkers in our study showed frequent sleep problems and poorer sleep quality offshore than onshore. Our results indicate that higher degrees of exposure to noise, vibrations and artificial ventilation are associated with poor sleep quality rather than organisational factors such as shift-work and type of working schedule. In view of the high demands of the offshore workplace and the workers' particular recovery needs, addressing sleep disorders should be part of any health and safety management strategy for this workplace.
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