Author/Authors :
Gholami Fesharaki، Mohammad نويسنده Biostatistics Department, Tarbiat Modarres University, Tehran, IR Iran , , Kazemnejad، Anoshirvan نويسنده , , Zayeri، Farid نويسنده Proteomics Research Center, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran , , Rowzati، Mohsen نويسنده General Practitioner, Worksite Follow-Up Unit, Occupational Health Center, Mobarakeh Steel Company, Isfahan, Iran , , Sanati، Javad نويسنده General Practitioner, Occupational Health Center, Polyacryle Company, Isfahan, Iran , , akbari، hamed نويسنده ,
Abstract :
BACKGROUND: Regarding the relationship between blood pressure (BP) and shift work (SW),
previous studies have reported contradictory results. In the present study, we used Bayesian
multilevel modeling to evaluate the association of SW and BP after controlling some
confounding factors.
METHODS: Data of this multicenter historical study were extracted from annual observations of
the male workers of Isfahan’s Mobarakeh Steel Company (IMSC) and Polyacryl Iran
Corporation (PIC) in Isfahan, Iran, between 2003 and 2011. In this research, we assessed the
effect of SW on systolic BP (SBP) and diastolic BP (DPB) with controlling body mass index, age,
work experience, marriage, and education status.
RESULTS: A total of 8613 (IMSC, n = 5314 and PIC, n = 3299) workers participated in this study
with a mean [standard deviation (SD)] age of 41.60 (8.30) and mean (SD) work experience of
16.17 (7.89) years. In this study, after controlling confounding factors, we found no significant
relationship between SW and SBP and DBP.
CONCLUSION: In general, the results of this multicenter cohort study did not support a
relationship between SW and BP. We suggest prospective studies with controlling more
confounding factors in this area.
