Sleep patterns and the risk of adverse birth outcomes among Chinese women

Abstract

Objective: To evaluate the association between sleep patterns (sleep duration or timing) in late pregnancy and adverse birth outcomes (preterm delivery or small for gestational age, SGA).Methods: An analysis of data from a prospective cohort study of pregnant women in Wuhan city, Hubei Province, China, between 2012 and 2014. Preterm delivery was defined as delivery before 37 gestational weeks. SGA was defined as neonatal birthweight below the 10th percentile of the predicted birthweight distribution.Results: In total, 11 192 women were included in the analysis. After adjustment for potential confounders, 9.1-10 hours of nocturnal sleep was associated with a lower likelihood of SGA (odds ratio [OR], 0.81; 95% confidence interval [CI], 0.66-0.99) as compared with 7.1-9 hours. As compared with intermediate mid-sleep time (between 02:46 and 04:00), early mid-sleep time (at or earlier than 02:45) was associated with a higher likelihood of preterm delivery (OR, 1.64; 95% CI, 1.28-2.10). Conclusion:Among a large cohort of pregnant Chinese women, 9.1-10 hours of nocturnal sleep was associated with a lower risk of SGA, whereas early mid-sleep time was associated with a higher risk of preterm delivery. K E Y W O R D SMiddle sleep time; Pregnant women; Preterm delivery; Sleep duration; Sleep timing; Small for gestational age

Maternal sleep during pregnancy and adverse pregnancy outcomes: A systematic review and meta‐analysis

“…Figure 1 shows a flowchart outlining the selection of eligible literature. There were 5,246 articles initially identified, after removing duplicates and double assessment, 41 of which were ultimately included in the meta‐analysis 8 , 14 , 15 , 21 , 22 , 23 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 . These studies took place mainly in the USA ( n = 13) 8 , 31 , 32 , 33 , 34 , 35 , 38 , 39 , ...…”

Associations of Midpoint of Sleep and Night Sleep Duration with Type 2 Diabetes Mellitus in Chinese Rural Population: The Henan Rural Cohort

“…Second, there were no objective parameters of chronotype in the present study which should be addressed in future studies. Third, the midpoint of sleep was classi ed into three categories by the 25th and 75th percentile based on previous study [25] and might lead to misclassi cation. Fourth, this study was a cross-sectional which was unlikely to yield a clear cause-effect conclusion and the information of sleep was self-reported which might suffer recall bias.…”

“…Using these data, sleep time was computed as bedtime plus sleep latency. The midpoint of sleep was calculated as the halfway point between sleep time and wake-up time and was classi ed into three categories by the 25th and 75th percentile according to the distribution: Early, Intermediate (reference) and Late [25]. Sleep duration was also calculated from sleep time and wake-up time and grouped as < 5 h, 5-h, 6-h, 7-h (reference), 8-h, 9-h and ≥ 10 h [26].…”

Gebelikte Uyku Sorunlarının Perinatal Süreçteki Etkileri ve Çözüm Sürecinde Hemşirelik Yaklaşımları

“…Gebelikte görülen uyku sorunları gebelikte aşırı kilo alımı, yaşam kalitesinin düşmesi, doğum sonrası ruh halinin kötüleşmesi, gestasyonel diyabetes mellitus ve yüksek arteryal kan basıncı gibi riskli durumların ortaya çıkmasını tetikleyebilmektedir (6,25,32,37,38). Gebelikte yaşanan uyku sorunlarının fetüs sağlığına da düşük doğum ağırlığı ve düşük apgar skoru gibi olumsuz etkileri bulunmaktadır (29,39). Bu başlık altında gebelikte yaşanan uyku sorunlarının anne ve fetüs sağlığına etkilerine yönelik çalışma sonuçlarına yer verilmiştir.…”

“…Ancak kısa uyku süresi ile erken doğum arasında bir ilişki bildirilmemiştir (46). Çin' de 11.192 gebe kadında yapılan bir başka çalışmada, 02:46 ve 04:00 arası erken orta uyku zamanının erken doğum riski ile ilişkili olduğu bulunmuştur (39).…”