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Shift Work Effects and Pregnancy Outcome: A Historical Cohort Study
Mohammad Hossein Davari1, Elham Naghshineh2, Mehrdad Mostaghaci2
1Industrial Disease Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Journal of Family & Reproductive Health
|March 2, 2019
Summary
Shift work poses risks for pregnant employed mothers. This study found that rapid cycling shift work is associated with an increased incidence of preterm delivery in pregnant women.
Area of Science:
- Obstetrics and Gynecology
- Occupational Health
- Reproductive Health
Background:
- Employed mothers encounter numerous occupational hazards.
- Shift work, particularly in pregnant women, may disrupt hormonal balance.
- Previous research indicates potential adverse effects of shift work on pregnancy outcomes.
Purpose of the Study:
- To investigate the association between shift work and adverse pregnancy outcomes.
- To assess the impact of shift work on complications such as low birth weight, pre-eclampsia, and preterm delivery.
- To adjust for occupational factors and number of children when evaluating these effects.
Main Methods:
- A historical cohort study conducted in 2017 involving 429 pregnant women.
- Participants were selected from two hospitals in Isfahan, Iran.
- Statistical analyses included T-test, chi-square test, and logistic regression, with adjustments for occupation and number of children.
Main Results:
- Shift work was initially associated with increased incidence of small for gestational age, pre-eclampsia, intrauterine growth retardation, spontaneous abortion, and preterm delivery.
- After adjusting for occupation and number of children, only preterm delivery remained significantly associated with shift work.
- No statistically significant difference in age was observed between morning and shift workers.
Conclusions:
- Working in a rapid cycling shift schedule may increase the risk of preterm delivery in pregnant mothers.
- Occupational health policies should consider the risks associated with shift work for pregnant employees.
- Further research is warranted to explore the mechanisms linking shift work and preterm birth.
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