Association between rotating night shift work and carotid intima-media thickness among Chinese steelworkers: a cross-sectional survey

Jun 13, 2022Scandinavian journal of work, environment & health

Link between rotating night shift work and artery wall thickness in Chinese steelworkers

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Abstract

The mean carotid intima-media thickness (CIMT) among 3,582 steelworkers was 0.66 mm.

Current shift workers had a higher mean CIMT compared to day workers.
No significant associations were found between night shift work and mean CIMT after adjusting for confounding factors.
This study suggests that rotating night shift work is not linked to subclinical atherosclerosis in this population.
Further large-scale studies may be needed to confirm these findings.

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OBJECTIVE: This study aimed to examine the association between rotating night shift work and subclinical athero-sclerosis among Chinese steelworkers.

METHODS: We evaluated 3582 steelworkers who participated in the legally required health examination in 2017. Carotid intima-media thickness (CIMT) was measured using ultrasonography. Different exposure metrics of night shifts collected by face-to-face personal interviews were used to examine the relationship between night shift work and the mean CIMT.

RESULTS: The mean CIMT values were 0.66 (standard deviation 0.22) mm in the study population. Current shift workers shown higher mean CIMT compared to day workers. There were no significant associations between the current shift status, the duration of night shifts, the cumulative number of night shifts, the average frequency of night shifts, and the mean CIMT after all confounding factors adjusted both in male and female.

CONCLUSIONS: Rotating night shift work is not associated with subclinical atherosclerosis among steelworkers. Further large-scale prospective longitudinal studies are warranted to confirm our findings.

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Association between rotating night shift work and carotid intima-media thickness among Chinese steelworkers: a cross-sectional survey

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