title: Restless legs syndrome and pregnancy or delivery complications in China: a representative survey.
abstract: OBJECTIVE
  To perform a detailed epidemiological study of Chinese women and the relationship between restless legs syndrome (RLS) in pregnancy and any associated complications during delivery.
  
  
  METHODS
  A total of 3874 pregnant women (18-40 years) who had delivered babies at The First Affiliated Hospital of Zhengzhou University from May 2011 to May 2014 were enrolled in the study. Using a face-to-face interview questionnaire, data were collected pertaining to RLS incidence in pregnancy and any associated complications during delivery. The relationship between RLS frequency and pregnancy or delivery complications was further investigated.
  
  
  RESULTS
  Among 12.3% of the eligible participants, RLS prevalence occurred at least weekly. Older pregnant women were more likely to suffer from RLS. Individuals who experienced RLS at least weekly reported a statistically higher frequency of excessive daytime sleepiness and an increased prevalence of hypertension, cardiovascular disease, and preeclampsia compared with those without RLS.
  
  
  CONCLUSIONS
  The study revealed that RLS was frequent in Chinese pregnant women, especially in those with pregnancy or delivery complications such as hypertension, cardiovascular disease, and preeclampsia. Restless legs syndrome was also associated with excessive daytime sleepiness.
authors: Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian She Dong Avenue, Zhengzhou 450002, China.
authors: Gangqiong
authors: G
authors: Liu
authors: Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian She Dong Avenue, Zhengzhou 450002, China. Electronic address: liling0006@126.com.
authors: Ling
authors: L
authors: Li
authors: Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian She Dong Avenue, Zhengzhou 450002, China.
authors: Jinying
authors: J
authors: Zhang
authors: Department of Urology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian She Dong Avenue, Zhengzhou 450002, China.
authors: Rui
authors: R
authors: Xue
authors: Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian She Dong Avenue, Zhengzhou 450002, China.
authors: Xiaoyan
authors: X
authors: Zhao
authors: Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian She Dong Avenue, Zhengzhou 450002, China.
authors: Kui
authors: K
authors: Zhu
authors: Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian She Dong Avenue, Zhengzhou 450002, China.
authors: Yunzhe
authors: Y
authors: Wang
authors: Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian She Dong Avenue, Zhengzhou 450002, China.
authors: Lili
authors: L
authors: Xiao
authors: Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian She Dong Avenue, Zhengzhou 450002, China.
authors: Jiahong
authors: J
authors: Shangguan
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002681:China / Q000453:epidemiology; D005260:Female; D006306:Health Surveys; D006801:Humans; D006973:Hypertension / Q000150:complications / Q000453:epidemiology; D007744:Obstetric Labor Complications / Q000209:etiology*; D011225:Pre-Eclampsia / Q000453:epidemiology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D011256:Pregnancy Outcome; D015995:Prevalence; D012148:Restless Legs Syndrome / Q000150:complications* / Q000453:epidemiology*; D012720:Severity of Illness Index
keywords: China; Complications; Pregnancy; Prevalence; Restless legs syndrome; Sleep