Volume 7, Issue 1 (spring 2010)                   ioh 2010, 7(1): 6-0 | Back to browse issues page

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Research Center for Health Sciences, Shiraz University of Medical Sciences, Iran. , alrchoobin@sums.ac.ir
Abstract:   (10761 Views)

Background and aims

Shift work is a major feature of working life that affects diverse aspects of human life. The main purposes of this study were to investigate shift work-related health problems and their risk factors among workers of "12-hour shift" schedule.


This cross-sectional study was carried out at 8 petrochemical industries in Asalooyeh area. Study population consisted of 1203 workers including 549 shift worker (46%) and 654 day worker (54%). Data on personal details, shift schedule and adverse effects of shift work were

collected by anonymous questionnaire. Statistical analyses were performed using SPSS, version 11.5. The level of significance was set at 5%.


Although, the results showed that health problems among shift workers was more prevalent than day workers, but the differences were just significant in gastrointestinal and musculoskeletal disorders (p<0.05). Multiple linear regressions indicated that in addition to shift working, other variants such as long work hours, type of employment, second job, number of children and job title were associated with health problems.


Prevalence rates of gastrointestinal and musculoskeletal problems among shift workers were significantly higher than that of day workers. Although, working in shift system was the main significant factor associated with the reported problems, but other demographic and

work variables were also found to have association.

Full-Text [PDF 339 kb]   (4222 Downloads)    
Type of Study: Research | Subject: Occupational Diseases
Received: 2010/07/24 | Published: 2010/04/15