Raynaud's Phenomenon and Hand-Arm Vibration Exposure in Male Workers
Author Information
Author(s): Hagberg Mats, Burström Lage, Lundström Ronnie, Nilsson Tohr
Primary Institution: Department of Occupational and Environmental Medicine, University of Gothenburg, Sweden; Department of Occupational and Environmental Medicine, Umeå University, Umeå, Sweden
Hypothesis
What is the incidence of Raynaud's phenomenon in relation to hand-arm vibration exposure among male workers?
Conclusion
The study suggests that the EU directive on an action value for hand-arm vibration of 2.5 m/s2 is not too low and that actions should be taken even at exposure values of 1 m/s2.
Supporting Evidence
- The retrospective incidence of Raynaud's phenomenon was 15.9 per 1000 exposure years among exposed workers.
- The prospective incidence was 13.6 per 1000 exposure years among exposed workers.
- The study found a dose-response relationship indicating higher incidence rates with increased exposure to hand-arm vibration.
- Employers are encouraged to take actions even at lower exposure values of 1 m/s2.
Takeaway
This study looked at how often workers get a condition called Raynaud's phenomenon when they use vibrating tools. It found that even low levels of vibration can be harmful.
Methodology
The study used both retrospective and prospective cohort analyses to assess the incidence of Raynaud's phenomenon among male office and manual workers exposed to hand-arm vibration.
Potential Biases
Recall bias may be present among those who answered the questionnaire at the physical examination.
Limitations
Recall bias may affect the retrospective data, and the case definition relied on self-reporting without objective measurements of cold-induced vasospasm.
Participant Demographics
The cohort consisted of male office and manual workers, all full-time employed at an engineering plant.
Digital Object Identifier (DOI)
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