Effect of Maternal Smoking Cessation Before and During Early Pregnancy on Fetal and Childhood Growth

作者：Suzuki Kohta^*; Sato Miri; Zheng Wei; Shinohara Ryoji; Yokomichi Hiroshi; Yamagata Zentaro

来源：Journal of Epidemiology, 2014, 24(1): 60-66.

DOI：10.2188/jea.JE20130083

• smoking cessation
• pregnancy
• fetal growth
• childhood growth

Background: Maternal smoking during pregnancy is a major cause of intrauterine growth restriction and childhood obesity, but only a few studies have examined the association of smoking cessation before and during pregnancy with fetal and childhood growth. We examined this association in a prospective cohort study in Japan. %26lt;br%26gt;Methods: Our study included children born between 1991 and 2006 and their mothers. Using a questionnaire, maternal smoking status was recorded at pregnancy. The anthropometric data of the children were collected during a medical check-up at age 3 years. Multiple linear and logistic regression models were used for data analysis stratified by sex. %26lt;br%26gt;Results: In total, 2663 mothers reported their smoking status during early pregnancy, and data were collected from 2230 (83.7%) children at age 3 years. Maternal smoking during pregnancy was associated with a significant reduction in birth weight (approximately 120-150 g). Body mass index at age 3 years was significantly higher among boys born to smoking mothers than among boys born to nonsmoking mothers. Maternal smoking during pregnancy was associated with overweight at age 3 years among boys (adjusted odds ratio, 2.4; 95% CI, 1.03-5.4). However, among women who stopped smoking in early pregnancy, there was no increase in the risks of a small for gestational age birth or childhood overweight at age 3 years. %26lt;br%26gt;Conclusions: Children born to mothers who stopped smoking before or during early pregnancy had appropriate fetal and childhood growth.

• 出版日期2014-1