title: Sleep disturbances in Chinese pregnant women.
abstract: In a prospective study of 247 pregnant Chinese women, the prevalence of sleep disturbances across pregnancy has been assessed using a set of validated questionnaires including the Sleep and Health Questionnaire (SHQ) and the Epworth Sleepiness Scale (ESS). The frequency of self-reported snoring increased from 29.7% in the first trimester to 40.5% and 46.2% in the second and third trimesters, respectively, with an increase in the prevalence of moderate or severe snoring from 1% in the first trimester to 7.2% in the third trimester (P < 0.01). There was a higher frequency of moderate to severe snoring intensity among subjects with BMI >or=25 compared with those with BMI <25 kg/m(2) in the third trimester (20.8%vs 5.3%, P < 0.01). Subjective sleepiness, as determined by the ESS, increased significantly from 8.6 to 9.4 and 9.6 in the first, second and third trimesters, respectively.
authors.affiliation: Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.
authors.forename: Pui Ling
authors.initials: PL
authors.lastname: Leung
authors.forename: David Shu Cheong
authors.initials: DS
authors.lastname: Hui
authors.forename: Tse Ngong
authors.initials: TN
authors.lastname: Leung
authors.forename: Pong Mo
authors.initials: PM
authors.lastname: Yuen
authors.forename: Tze Kin
authors.initials: TK
authors.lastname: Lau
mesh_terms: D000328:Adult; D044466:Asian People / Q000208:ethnology*; D015992:Body Mass Index; D005260:Female; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D011264:Pregnancy Trimesters; D015995:Prevalence; D011446:Prospective Studies; D012307:Risk Factors; D012893:Sleep Wake Disorders / Q000453:epidemiology*; D012913:Snoring / Q000453:epidemiology*; D011795:Surveys and Questionnaires