Modifying the risk of recurrent preterm birth: influence of trimester-specific changes in smoking behaviors.

Background: Women with at least 1 prior occurrence of premature birth often have demographic and medical risk factors that are not modifiable. However, smoking cessation could be a targeted intervention in which a woman with a history of premature birth may be able to reduce her future risk of recurrence.

Objective: This study aims to assess how trimester-specific smoking patterns influence the risk of recurrent premature birth.

Relationship of trimester-specific smoking patterns and risk of preterm birth.

Background: In 2011, the US national rate of smoking early in pregnancy was 11.5%. Unfortunately, our home state of Ohio had a rate twice as high at 23%.

Factors Associated with Smoking Cessation in Pregnancy.

Objective The objective of this study was to quantify the influence of various patient characteristics on early smoking cessation to better identify target populations for focused counseling and interventions. Study Design This study was a population-based retrospective cohort study of 1,003,532 Ohio live births more than 7 years (2006-2012). Women who quit smoking in the first trimester were compared with those who smoked throughout pregnancy.

Association of reported trimester-specific smoking cessation with fetal growth restriction.

Objective: To assess the association of reported smoking cessation at various time points during pregnancy with fetal growth restriction.

Methods: This was a population-based retrospective cohort study of singleton nonanomalous live births using Ohio birth certificates, 2006-2012. Outcomes of women who reported smoking only in the 3 months before conception and women who reported smoking through the first, second, or third trimester were compared with a referent group of nonsmokers.