Related Experiment Video

Updated: Nov 3, 2025

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
08:20

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood

Published on: October 2, 2019

12.2K

Daytime Napping and Nighttime Sleep During Pregnancy and Preterm Birth in Iran

Farnaz Shaliha1, Maryam Mozaffari1, Faeze Ramezani1

  • 1Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran.

Journal of Preventive Medicine and Public Health = Yebang Uihakhoe Chi
|June 7, 2021
PubMed

Insights

Poor sleep quality is common in pregnancy, affecting over 84% of women. However, this study found no significant link between sleep quality and preterm birth risk in pregnant individuals.

Area of Science:

  • Obstetrics and Gynecology
  • Sleep Medicine
  • Perinatal Health

Background:

  • Poor sleep quality is a prevalent issue among pregnant women.
  • Understanding factors influencing preterm birth is crucial for maternal and infant health.

Purpose of the Study:

  • To investigate the association between sleep quality during pregnancy and the incidence of preterm birth.
  • To identify potential predictors of preterm birth among pregnant women.

Main Methods:

  • A longitudinal study involving 150 pregnant women in Qazvin, Iran.
  • Sleep quality assessed using the Petersburg Sleep Quality Index and Epworth Sleepiness Scale at 14-18 and 28-32 weeks gestation.
  • Data analyzed with Mann-Whitney, Fisher exact tests, and logistic regression.

Main Results:

  • High prevalence of poor sleep quality: 84.7% at 14-18 weeks and 93.3% at 28-32 weeks.
  • Age and Petersburg Sleep Quality Index scores in the second and third trimesters were included in the final preterm birth prediction model.
  • While higher scores indicated increased preterm birth risk (42% and 28% respectively), these associations were not statistically significant.

Conclusions:

  • Despite a high prevalence of poor sleep quality in pregnant women, no statistically significant relationship was established with preterm birth.
  • Further research may be needed to explore other contributing factors to preterm birth in populations with poor sleep quality.
Abstract

Keywords:
IranPregnancyPremature birthSleep

More Related Videos

A Preterm Rat Model for Pain Studies01:37

A Preterm Rat Model for Pain Studies

Published on: February 9, 2024

561
A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting14:43

A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting

Published on: January 12, 2018

12.3K

Related Concept Videos

Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
404
Regression Toward the Mean01:52

Regression Toward the Mean

Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
6.6K
Teratogenicity01:07

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
3.3K
Management of Insomnia01:19

Management of Insomnia

The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
364