Later sleep timing is associated with an increased risk of preterm birth in nulliparous women

Although uterine contractions have a diurnal periodicity and increase in frequency during hours of darkness, data on the relationship between sleep duration and sleep timing patterns and preterm birth are limited. We sought to examine the relationship of self-reported sleep duration and timing in pr...

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Bibliographic Details
Published in:American journal of obstetrics & gynecology MFM 2019-11, Vol.1 (4), p.100040-100040, Article 100040
Main Authors: Facco, Francesca L, Parker, Corette B, Hunter, Shannon, Reid, Kathryn J, Zee, Phyllis P, Silver, Robert M, Pien, Grace, Chung, Judith H, Louis, Judette M, Haas, David M, Nhan-Chang, Chia-Ling, Simhan, Hyagriv N, Parry, Samuel, Wapner, Ronald J, Saade, George R, Mercer, Brian M, Bickus, Melissa, Reddy, Uma M, Grobman, William A
Format: Article
Language:English
Subjects:
Female
Gestational Age
Humans
Infant, Newborn
Pregnancy
Pregnancy Outcome
Premature Birth - epidemiology
Prospective Studies
Sleep
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Summary:Although uterine contractions have a diurnal periodicity and increase in frequency during hours of darkness, data on the relationship between sleep duration and sleep timing patterns and preterm birth are limited. We sought to examine the relationship of self-reported sleep duration and timing in pregnancy with preterm birth. In the prospective Nulliparous Pregnancy Outcome Study: Monitoring Mothers-to-be cohort, women completed a survey of sleep patterns at 6-13 weeks gestation (visit 1) and again at 22-29 weeks gestation (visit 3). Additionally, at 16-21 weeks gestation (visit 2), a subgroup completed a weeklong actigraphy recording of their sleep. Weekly averages of self-reported sleep duration and sleep midpoint were calculated. A priori, sleep duration of 5 am) in early pregnancy had a preterm birth rate of 9.5%, compared with 6.9% for women with sleep midpoint ≤5 am (P=.005). Similarly, women with a late sleep midpoint had a higher rate of spontaneous preterm birth (6.2% vs 4.4%; P=.019). Comparable results were observed for women with a late sleep midpoint at visit 3 (all preterm birth 8.9% vs 6.6%; P=.009; spontaneous preterm birth 5.9% vs 4.3%; P=.023). All adjusted analyses on self-reported sleep midpoint (models 1 and 2) maintained statistical significance (P
ISSN:2589-9333
2589-9333
DOI:10.1016/j.ajogmf.2019.100040