title: [Prevalence of smoking cessation during pregnancy according to trimester].
abstract: OBJECTIVE
  To investigate the smoking cessation period during pregnancy.
  
  
  METHODS
  Questionnaire-based, descriptive study of 979 pregnant women in four regions of France. The variables analysed included the characteristics of the mother and neonate at delivery, the smoking habits of the mother before and during pregnancy, the perception of risk linked to smoking, and the reasons for giving up smoking.
  
  
  RESULTS
  Eighteen percent of women smoked until delivery. Forty-five percent of women gave up smoking during pregnancy, usually in the first trimester. More precisely, about one woman who smoked out of 50 gives up in order to prepare pregnancy. The proportion of women who stop smoking in each of the three trimesters of pregnancy is 84,1, 8,8 and 7,1% respectively.
  
  
  CONCLUSIONS
  Most women appear to stop smoking before any intervention therapy is possible. The first contact with a midwife or an obstetrician takes place whereas smoking cessation is already successful.
authors.affiliation: Association Alliés, 20, boulevard Malesherbes, 75008 Paris, France. gilles.grange@cch.aphp.fr
authors.forename: G
authors.initials: G
authors.lastname: Grangé
authors.forename: A
authors.initials: A
authors.lastname: Borgne
authors.forename: A
authors.initials: A
authors.lastname: Ouazana
authors.forename: J-P
authors.initials: JP
authors.lastname: L'huillier
authors.forename: P
authors.initials: P
authors.lastname: Valensi
authors.forename: G
authors.initials: G
authors.lastname: Peiffer
authors.forename: H-J
authors.initials: HJ
authors.lastname: Aubin
authors.forename: D
authors.initials: D
authors.lastname: Thomas
authors.forename: F
authors.initials: F
authors.lastname: Lebargy
authors.forename: A
authors.initials: A
authors.lastname: El Hasnaoui
mesh_terms: D000328:Adult; D005260:Female; D005602:France; D006801:Humans; D009035:Mothers / Q000523:psychology*; D009042:Motivation; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D011297:Prenatal Exposure Delayed Effects; D012907:Smoking / Q000523:psychology*; D016540:Smoking Cessation / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D013997:Time Factors