title: Women who spontaneously quit smoking in early pregnancy.
abstract: Spontaneous quitters are prepregnancy smokers who quit by the time of their first antenatal visit. We recruited 192 self-declared spontaneous quitters and 407 smokers at their first visit to the antenatal clinic at the Royal Women's Hospital during April, 1994-May, 1995. Spontaneous quitters made up 23% of prepregnancy smokers. Information about self-declared quitters and smokers was collected by self-completed questionnaires. Urine samples collected at the first visit and in late pregnancy were assayed for cotinine to validate smoking status. A cut-off urinary concentration of > or = 653 nmol/L cotinine was used to determine active smoking. At the first visit, 20% of the self-declared spontaneous quitters were smoking and by late pregnancy, regardless of their initial biochemically verified status, 27% were smoking. Spontaneous quitters were different from women who said they were still smoking at their first antenatal visit, in a range of demographic variables and measures of addictive behaviour.
authors.affiliation: Department of Perinatal Medicine, Royal Women's Hospital, Melbourne, Victoria.
authors.forename: M
authors.initials: M
authors.lastname: Panjari
authors.forename: R J
authors.initials: RJ
authors.lastname: Bell
authors.forename: J
authors.initials: J
authors.lastname: Astbury
authors.forename: S M
authors.initials: SM
authors.lastname: Bishop
authors.forename: F
authors.initials: F
authors.lastname: Dalais
authors.forename: G E
authors.initials: GE
authors.lastname: Rice
mesh_terms: D000328:Adult; D003367:Cotinine / Q000493:pharmacokinetics; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy / Q000706:statistics & numerical data*; D011264:Pregnancy Trimesters; D011295:Prenatal Care; D012008:Recurrence; D012907:Smoking / Q000453:epidemiology*; D016540:Smoking Cessation / Q000706:statistics & numerical data*; D014739:Victoria / Q000453:epidemiology
chemical_list: D003367:Cotinine