Amini Maedeh, Zayeri Farid
Department of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Proteomics Research Center and Department of Biostatistics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Med J Islam Repub Iran. 2019 Oct 12;33:109. doi: 10.34171/mjiri.33.109. eCollection 2019.
Shift work can be defined as work activity scheduled in which employees work outside standard daytime hours. Some reports have shown that shift work is associated with several health problems. The main objective of this research was to explore the effect of shift work on body mass index (BMI) over time among Iranian petroleum industry staff. This longitudinal study sample was consisted of 3,686 (1,872 day workers and 1,814 shift workers) petrochemical industries staff in Mahshahr, southwest of Iran, from 2012 to 2015. The weight and height of these staff were measured using standard techniques and equipment. Multiple-group latent growth curve modeling was used to determine the effect of shift working on BMI trajectories over this period of time via Mplus software, version 6.0. The mean (±SD) age of the shift workers and day workers were 38.96 (±8.36) and 43.33 (±8.35) years, respectively. Findings from the modeling approach showed that the slope of BMI in shift workers on average was 0.14 kg/m2 greater than the day workers in years under study (p<0.001). The findings of the current study suggest that shift work can be considered as a potential risk indicator for higher weight gain in petrochemical staff. Hence, health policy-makers should organize health screening programs and periodical checkups to find high-risk staff and control unhealthy lifestyle factors in these industries.
轮班工作可定义为安排员工在标准白天工作时间之外进行的工作活动。一些报告表明，轮班工作与多种健康问题相关。本研究的主要目的是探讨轮班工作对伊朗石油工业员工体重指数（BMI）随时间的影响。这项纵向研究的样本包括2012年至2015年期间伊朗西南部马赫沙尔的3686名石化行业员工（1872名日班工人和1814名轮班工人）。使用标准技术和设备测量了这些员工的体重和身高。通过Mplus软件6.0版，采用多组潜在增长曲线模型来确定在此期间轮班工作对BMI轨迹的影响。轮班工人和日班工人的平均（±标准差）年龄分别为38.96（±8.36）岁和43.33（±8.35）岁。建模方法的结果表明，在所研究的年份中，轮班工人的BMI平均斜率比日班工人大0.14kg/m²（p<0.001）。本研究结果表明，轮班工作可被视为石化员工体重增加较高的潜在风险指标。因此，卫生政策制定者应组织健康筛查计划和定期体检，以发现高危员工并控制这些行业中不健康的生活方式因素。
