title: A population study of first and subsequent pregnancy smoking behaviors in Ohio.
abstract: The objective of this study is to identify maternal characteristics associated with non-smoking during a subsequent pregnancy after first pregnancy smoking.
  
  
  
  We conducted a retrospective population-based analysis of Ohio vital birth records from 2007 to 2013. We used logistic regression to calculate adjusted odds ratios with 95% confidence intervals for detection of characteristics associated with non-smoking during a subsequent pregnancy after first pregnancy smoking.
  
  
  
  Among 75 190 mothers, 75.6% were non-smokers and 13.7% were smokers during both pregnancies. During their first pregnancy, 49.7% of 15 075 smokers quit. Of them, 50.1% remained non-smokers during their subsequent pregnancy. Women who reduced, but continued smoking during their first pregnancy, were more than five times as likely to smoke during their subsequent pregnancy than women who quit (odds ratio (95% confidence interval): 2.85 (2.43 to 3.35) vs 0.55 (0.45 to 0.67)).
  
  
  
  Interventions targeting complete cessation, rather than reduction in smoking among first-time mothers, may be the most effective at optimizing long-term health benefits.
authors.affiliation: Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.|Cradle Cincinnati, Cincinnati, OH, USA.
authors.forename: E S
authors.initials: ES
authors.lastname: Hall
authors.affiliation: Cradle Cincinnati, Cincinnati, OH, USA.
authors.forename: M
authors.initials: M
authors.lastname: Venkatesh
authors.affiliation: Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.|Cradle Cincinnati, Cincinnati, OH, USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Greenberg
mesh_terms: D000328:Adult; D001721:Birth Intervals / Q000706:statistics & numerical data; D001724:Birth Weight; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D016015:Logistic Models; D016017:Odds Ratio; D009820:Ohio / Q000453:epidemiology; D011159:Population Surveillance; D011247:Pregnancy; D011256:Pregnancy Outcome; D012189:Retrospective Studies; D012907:Smoking / Q000453:epidemiology*; D016540:Smoking Cessation / Q000523:psychology / Q000706:statistics & numerical data*; D055815:Young Adult