Document Type : Original Article(s)
Authors
- Mohammad Gholami-Fesharaki 1
- Anoshirvan Kazemnejad 2
- Farid Zayeri 3
- Mohsen Rowzati 4
- Javad Sanati 5
- Hamed Akbari 6
1 Assistant Professor, Department of Biostatistics, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran
2 Professor, Department of Biostatistics, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran
3 Associate Professor, Proteomics Research Center, School of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4 General Practitioner, Worksite Follow-Up Unit, Occupational Health Center, Mobarakeh Steel Company, Isfahan, Iran
5 General Practitioner, Occupational Health Center, Polyacryle Company, Isfahan, Iran
6 Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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.
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