title: Tea consumption during pregnancy and the risk of pre-eclampsia.
abstract: OBJECTIVE
  To examine the effects of tea consumption during pregnancy on the risk of pre-eclampsia.
  
  
  METHODS
  A case-control study was carried out among nulliparous pregnant women in Quebec between January 2003 and March 2006. Data were collected using a structured study questionnaire. A total of 92 women with pre-eclampsia and 245 controls were analyzed. Univariate analysis and multivariate regression were performed to examine the association between tea consumption and pre-eclampsia.
  
  
  RESULTS
  Compared with non-tea drinking during pregnancy, the crude odds ratio (OR) and adjusted OR (aOR) of pre-eclampsia for tea drinking were 1.34 (95% CI, 0.80-2.25) and 1.39 (95% CI, 0.81-2.41), respectively. The OR and aOR of severe pre-eclampsia for tea drinking were 1.39 (95% CI, 0.78-2.46) and 2.14 (95% CI, 1.01-4.54), respectively. The aORs for persistent tea consumption in pre-eclampsia and severe pre-eclampsia were 1.88 (95% CI, 1.01-3.51) and 1.95 (95% CI, 1.06-3.57), respectively.
  
  
  CONCLUSIONS
  Persistent tea drinking during pregnancy may be associated with an increased risk of pre-eclampsia.
authors.affiliation: Department of Obstetrics and Gynecology, University of Montreal, Quebec, Canada.
authors.forename: Shu-Qin
authors.initials: SQ
authors.lastname: Wei
authors.forename: Hairong
authors.initials: H
authors.lastname: Xu
authors.forename: Xu
authors.initials: X
authors.lastname: Xiong
authors.forename: Zhong-Cheng
authors.initials: ZC
authors.lastname: Luo
authors.forename: Francois
authors.initials: F
authors.lastname: Audibert
authors.forename: William D
authors.initials: WD
authors.lastname: Fraser
mesh_terms: D000328:Adult; D002253:Carbonated Beverages / Q000009:adverse effects; D016022:Case-Control Studies; D003069:Coffee / Q000009:adverse effects; D004327:Drinking Behavior; D005260:Female; D006801:Humans; D011225:Pre-Eclampsia / Q000209:etiology*; D011247:Pregnancy; D012307:Risk Factors; D013662:Tea / Q000009:adverse effects*; D055815:Young Adult
chemical_list: D003069:Coffee; D013662:Tea