Association of Maternal Cigarette Smoking and Smoking Cessation With Preterm Birth

Soneji, Samir; Beltrán‐Sánchez, Hiram

doi:10.1001/jamanetworkopen.2019.2514

Cited by 131 publications

(112 citation statements)

References 34 publications

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“…There is evidence that smoking cessation after becoming pregnant is associated with a reduced risk of preterm birth [8]. In past research, women who were younger than 20, Asian/Pacific Islander, had more than 12 years of education, had private insurance, and lived in urban areas were most likely to quit smoking during pregnancy [6,7].…”

Section: Introductionmentioning

confidence: 99%

Trends in smoking during pregnancy by socioeconomic characteristics in the United States, 2010–2017

Azagba

Manzione

Shan

et al. 2020

BMC Pregnancy Childbirth

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Background: Maternal smoking during pregnancy remains a public health concern in the United States (US). We examined whether the prevalence of smoking during pregnancy decreased between 2010 and 2017 and how trends differed by demographic subgroups. Methods: We used 2010-2017 data from the National Center for Health Statistics. Rao-Scott Chi-Square tests were performed to compare characteristics between smoking and nonsmoking groups. Cochran-Armitage tests and logistic regression were used to assess overall changes in the prevalence of smoking during pregnancy over time and changes for age, race, and educational attainment subgroups. Results: The prevalence of smoking during pregnancy decreased from 9.2% in 2010 to 6.9% in 2017. In 2017, the prevalence was highest among women aged 20-24 (9.9%), American Indian/Alaskan Natives (15%), and those with a high school diploma or General Educational Development (GED) (12.2%). The prevalence was lowest among women younger than 15 (1.7%), Asian/Pacific Islanders (1%), and those who had a master's degree and higher (0.3%). Prevalence did not decrease significantly over time in the 35-39 age group (4.5 to 4.4%; p = 0.08), and increased dramatically for women with less than a high school diploma from 10.2 to 11.8%; p < 0.0001. Conclusions: Smoking prevalence during pregnancy in the US is declining, but is highest among younger women (20-24), American Indian/Alaska Natives, and women with a high school diploma or GED. In addition, the prevalence has increased for women with the least education. Targeted research and tobacco control interventions could help address the specific needs of these high-risk subpopulations.

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Section: Introductionmentioning

confidence: 99%

Trends in smoking during pregnancy by socioeconomic characteristics in the United States, 2010–2017

Azagba

Manzione

Shan

et al. 2020

BMC Pregnancy Childbirth

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“…Cigarette smoking is a modifiable environmental factor associated with many adverse pregnancy results, such as low birth weight, preterm birth, and higher newborn mortality [2,4,[6][7][8]. Tobacco smoke contains several thousand chemicals that can be harmful to the placenta and pass through the placenta to the fetus [2,3].…”

Section: Introductionmentioning

confidence: 99%

Smoking and Smoking Cessation in the Risk for Fetal Growth Restriction and Low Birth Weight and Additive Effect of Maternal Obesity

Lewandowska

Więckowska

Sztorc

et al. 2020

JCM

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Many studies have shown that neonates of smoking mothers have a lower birth weight, but several issues remain poorly studied, e.g., the effects of giving up smoking or the combined effects of smoking and maternal obesity. Therefore, we evaluated a prospective cohort of 912 mothers in a single pregnancy, recruited in Poland, in 2015−2016. In the cohort, we recorded 72 (7.9%) newborns with birth weight <10th percentile, 21 (2.3%) fetal growth restriction (FGR) cases, and 60 (6.6%) low birth weight (LBW, <2500 g) newborns. In the cohort, 168 (18.4%) women smoked before pregnancy; the mean number of cigarettes/day was 10.8 (1–30), and the mean number of years of cigarette smoking was 8.5 (1–25). Among smokers, 57 (6.3%) women smoked in the first trimester. Adjusted odds ratio (AOR) of newborn outcomes (with 95% confidence intervals, CI) was calculated in multi-dimensional logistic regressions. Compared to participants who had never smoked, smoking before pregnancy was associated with a higher odds ratio of birth weight <10th percentile (AOR = 1.93, CI: 1.08–3.44, p = 0.027), but the result for LBW (AOR = 2.76, CI: 1.05–7.26, p = 0.039) and FGR (AOR = 1.13, CI: 0.38–3.36, p = 0.822) had the wider confidence interval or was insignificant. Effects of smoking cessation before pregnancy were statistically insignificant for the studied outcomes. Smoking in the first trimester was associated with a higher risk of birth weight <10th percentile (AOR = 4.68, CI: 2.28–9.62, p < 0.001), LBW (AOR = 6.42, CI: 1.84–22.36, p = 0.004), and FGR (AOR = 3.60, CI: 0.96–13.49, p = 0.057). Smoking cessation in the second/third trimester was associated with a higher odds ratio of birth weight <10th percentile (AOR = 4.54, CI: 1.58–13.02, p = 0.005), FGR (AOR = 3.36, CI: 0.6–18.74, p = 0.167), and LBW (AOR = 2.14, CI: 0.62–7.36), p = 0.229), to a similar degree to smoking in the first trimester. The odds ratios were higher in the subgroup of pre-pregnancy body mass index ≥25 kg/m2 for the risk of birth weight <10th percentile (AOR = 6.39, CI: 2.01–20.34, p = 0.002) and FGR (AOR = 6.25, CI: 0.86–45.59, p = 0.071). The length of cigarette smoking time was also the risk factor for studied outcomes. Conclusions: Smoking in the first trimester increased the studied risks, and the coexistence of excessive maternal weight increased the effects. Smoking cessation during the second/third trimester did not have a protective effect.

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“…According to the WHO data, the percentage of premature births in Serbia increased from 7.23% in 2000 to 11.97% in 2014 (22). Data from a few studies conducted in Serbia indicated the existence of some of the premature birth risk factors, such as maternal age (23), smoking (24), obesity, and overweight mothers (25). Delayed maternity is often present among women in Serbia, which increases the risk of preterm delivery.…”

Section: Discussionmentioning

confidence: 99%

Trends and Causes of Neonatal Mortality in Serbia, 1997-2016

Lazarević¹,

Bogdanović²,

Stošić³

2020

Balkan Med J

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Background: Regardless of the notable reduction in infant deaths worldwide over the last 30 years, the proportion of neonatal mortality in total child mortality is increasing. Aims:To perform a trend analysis of neonatal mortality in Serbia.Study Design: Descriptive observational study. Methods:Joinpoint regression was used to analyze neonatal mortality data for the years 1997 to 2016 that were obtained from the Statistical Office of Serbia. Results:The trend in the neonatal mortality rate decreased significantly by -5.6% (95% CI: -6.5 to -4.6) per year from 1997 to 2007, and by -2.6% (95% CI: -3.7 to -1.5) per year from 2007 to 2016. The neonatal mortality rate for certain conditions originating in the perinatal period decreased by -6.2% (95% CI: -7.5 to -4.9) per year during the years from 1997 to 2006, and by -1.9% (95% CI: -3.1 to -0.7) per year from 2006 to 2016. Among these conditions, disorders related to short gestation and low birth weight, not elsewhere classified, showed an upward trend by 8.5% (95% CI: 6.2 to 10.8) per year during the entire study period. From 1997 to 2016, a significant decrease in the neonatal mortality rate was detected in cases of congenital malformations, deformations, and chromosomal abnormalities, by -5.0% (95% CI: -6.1 to -4.0) per year. The neonatal mortality rate for cases of symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classified, decreased by -8.1% (95% CI: -11.0 to -5.2) yearly. Conclusion: The neonatal mortality rate in Serbia decreased between 1997 and 2016, excluding deaths due to short gestation and low birth weight. Therefore, prevention of short gestation and low birth weight should be the highest public priority.

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Association of Maternal Cigarette Smoking and Smoking Cessation With Preterm Birth

Cited by 131 publications

References 34 publications

Trends in smoking during pregnancy by socioeconomic characteristics in the United States, 2010–2017

Trends in smoking during pregnancy by socioeconomic characteristics in the United States, 2010–2017

Smoking and Smoking Cessation in the Risk for Fetal Growth Restriction and Low Birth Weight and Additive Effect of Maternal Obesity

Trends and Causes of Neonatal Mortality in Serbia, 1997-2016

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