Published in:
01-07-2020 | Migraine | Original Article
The longitudinal association between shift work and headache: results from the Danish PRISME cohort
Authors:
Andreas Moses Appel, Eszter Török, Marie Aarrebo Jensen, Anne Helene Garde, Åse Marie Hansen, Linda Kaerlev, Matias Brødsgaard Grynderup, Kirsten Nabe-Nielsen
Published in:
International Archives of Occupational and Environmental Health
|
Issue 5/2020
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Abstract
Purpose
We investigated the effect of shift work on headache. Furthermore, we investigated whether the association between shift work and headache was explained by potential mediators in terms of perceived stress, poor sleep and health behaviors.
Methods
In this longitudinal study, we used questionnaire data (collected in 2007 and 2009) from civil servants and hospital employees from the PRISME study. 2952 individuals were available for the analyses of shift work and headache and 2272 individuals were available for the analyses of shift work and migraine. Headache was operationalized as the participants’ experience of “being bothered by headache during the past 4 weeks”. Migraine was operationalized as “ever being diagnosed with migraine by a medical doctor”. We used binary logistic regression to compare shift workers with permanent day workers and adjusted for socio-demographic factors. In a subsequent step, we adjusted for potential mediators.
Results
We found higher odds of unspecific headache (OR = 1.25; 95% CI 1.02–1.54) and migraine (OR = 1.72; 95% CI 1.04–2.86) among shift workers compared with day workers. Our results suggest that the effect of shift work on headache and migraine differ between men and women. Inclusion of potential mediators in the analyses did not attenuate the associations.
Conclusion
Shift workers have higher risk of reporting being bothered by headache as well as reporting being diagnosed with migraine. Future research is needed to disentangle the underlying mechanisms with the aim of reducing headache related to occupational exposures.