Journal of Preventive Medicine and Public Health

The Korean Society for Preventive Medicine (대한예방의학회)
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Daytime Napping and Nighttime Sleep During Pregnancy and Preterm Birth in Iran

  • Shaliha, Farnaz (Student Research Committee, Qazvin University of Medical Sciences) ;
  • Mozaffari, Maryam (Student Research Committee, Qazvin University of Medical Sciences) ;
  • Ramezani, Faeze (Student Research Committee, Qazvin University of Medical Sciences) ;
  • Hajnasiri, Hamideh (Social Determinants of Health Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences) ;
  • Moafi, Farnoosh (Social Determinants of Health Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences)
  • Received : 2020.08.01
  • Accepted : 2021.03.11
  • Published : 2021.05.31
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Abstract

Objectives: This study investigated the relationship between sleep quality during pregnancy and preterm birth. Methods: This longitudinal study was conducted between August 2018 and May 2019. The participants were 150 pregnant women who had been referred to 7 healthcare centers in the city of Qazvin, Iran and met the inclusion criteria. The Petersburg Sleep Quality Index, the Epworth Sleepiness Scale, and 2 questions about daytime sleep status and a demographic questionnaire were administered at 14-18 weeks and 28-32 weeks of gestation. Data were analyzed using the Mann-Whitney test, the Fisher exact test, and univariate and multivariable logistic regression. Results: In the present study, poor sleep quality affected 84.7% of the participants at 14-18 weeks and 93.3% at 28-32 weeks of gestation. The final model for preterm birth prediction incorporated age and the Petersburg Sleep Quality Index score in the second and third trimesters. Preterm birth increased by 14% with each unit increase in age. With each unit increase in the Petersburg Sleep Quality Index score in the second and third trimesters, preterm birth increased by 42% and 28%, respectively, but the p-values of these factors were not significant. Conclusions: Although a significant percentage of pregnant women had poor sleep quality, no significant relationship was found between sleep quality during pregnancy and preterm birth.

Keywords

Acknowledgement

The authors would like to express their appreciation for the pregnant women who took part in this study.

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