Effect of Smoking Cessation at Different Trimesters on Pregnancy Outcome

Objective: To investigate the effect of smoking cessation at various trimesters on pregnancy outcome. Methods: Pregnant smokers who were followed up at two public hospitals in Hong Kong between April 2011 and May 2015 were retrospectively reviewed. Based on their self-reported smoking status, women...

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Bibliographic Details
Published in:Hong Kong journal of gynaecology, obstetrics, and midwifery = Xianggang fu chan zhu chan ke za zhi obstetrics, and midwifery = Xianggang fu chan zhu chan ke za zhi, 2018-07, Vol.18 (2), p.68
Main Authors: KWA, Carina, Lin-Wai, CHAN
Format: Article
Language:English
Subjects:
Birth weight
Clinical outcomes
Fetuses
Pregnancy
Prenatal development
Smoking cessation
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Summary:Objective: To investigate the effect of smoking cessation at various trimesters on pregnancy outcome. Methods: Pregnant smokers who were followed up at two public hospitals in Hong Kong between April 2011 and May 2015 were retrospectively reviewed. Based on their self-reported smoking status, women were categorised as having quit smoking in the (1) first trimester, (2) second trimester, or (3) third trimester, or (4) having continued to smoke throughout pregnancy. The four groups were compared in terms of maternal characteristics and pregnancy outcomes. Results: During the study period, among 18,816 pregnant women, 314 (1.7%) still smoked. Of them, 275 were included: 147 (53.5%) continued to smoke throughout pregnancy and 74 (26.9%), 38 (13.8%), and 16 (5.8%) quit smoking in the first, second, and third trimester, respectively. The four groups were comparable in terms of maternal characteristics. Women who smoked fewer cigarettes were more likely to quit smoking at an earlier trimester (p
ISSN:1608-9367