Evidence map›Paper›PMID 36118558›Full record

ArticleTobacco induced diseases2022

Fetal growth restriction, low birth weight, and preterm birth: Effects of active or passive smoking evaluated by maternal expired CO at delivery, impacts of cessation at different trimesters.

Conchita Delcroix-Gomez, Michel-Henri Delcroix, Amal Jamee, Tristan Gauthier, Pierre Marquet, Yves Aubard

Abstract read
In one paragraph

Article in Tobacco induced diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  8. Carbon monoxide levels, smoking and adverse pregnancy outcomes.Acta obstetricia et gynecologica Scandinavica · 2025
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  10. Review
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  16. Inequalities in smoking among pregnant women in North West London.Journal of public health (Oxford, England) · 2023
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Conchita Delcroix-GomezService d'Obstétrique et de Gynécologie, Pôle Femme et Enfant, Centre Hospitalier d'Arras, Arras, France.
Michel-Henri DelcroixEtablissement Public de Santé Mentale des Flandres, Maternité Sans Tabac, Association Périnatalité Recherche Information, Bailleul, France.
Amal JameeUniversity of Palestine, Gaza, Gaza Strip, Palestine.
Tristan GauthierService d'Obstétrique et de Gynécologie, Hôpital de la Mère et de l'Enfant, Centre Hospitalier Universitaire de Limoges, Limoges, France.
Pierre MarquetService de Pharmacologie, Toxicologie et Pharmacovigilance, Centre Hospitalier Universitaire de Limoges, Limoges, France.
Yves AubardService d'Obstétrique et de Gynécologie, Hôpital de la Mère et de l'Enfant, Centre Hospitalier Universitaire de Limoges, Limoges, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe objectives of this study were to evaluate the effect of cessation of active smoking during the 1st, 2nd, and 3rd trimesters of pregnancy on the risk of reduced birth weight and prematurity using an exhaled carbon monoxide biomarker with a cut-off value ≥3 ppm as well as the effects of passive smoking.

methodsThis was a multicenter prospective cohort study involving pregnant smokers and non-smokers. Pregnant smokers were identified at the first prenatal visit before 15 weeks of amenorrhea by the number of cigarettes smoked per day and by the carbon monoxide breath test. Women were classified into 6 groups: non-smokers, passive smokers, first trimester cessation, second trimester cessation, third trimester cessation, and smoking throughout pregnancy. Smoking cessation was defined if the pregnant woman reported quitting smoking and if she achieved an exhaled CO level of <3 ppm. The association between smoking cessation and fetal growth restriction or prematurity was assessed by multivariate logistic regression. Passive smoking was defined for non-smoking women on declarative smoking status and exhaled CO ≥3 ppm. The association between passive smoking and fetal growth restriction or prematurity was assessed by multivariate logistic regression.

resultsThe number of patients included was 5244. The incidence of fetal growth restriction below the 10th percentile was 10.6%, 12.1%, 8.5%, 9.1%, 21.1%, and 22.9%, respectively, for the non-smoking, passive smoking, first, second, third trimester cessation, and full-pregnancy smoking, groups. The risk of FGR compared to non-smokers was OR=2.3 (95% CI: 1.18-4.30, p=0.014) for patients who quit smoking in the third trimester, OR=2.5 (95% CI: 2.03-3.12, p<0.001) for women who smoked throughout pregnancy. After logistic regression, FGR (AOR=1.9; 95% CI: 0.96-3.82) for women who quit smoking in the 3rd trimester (AOR=1.8; 95% CI: 1.38-2.31, p<0.001). The risk of FGR <5th percentile was AOR=1.96 (95% CI: 1.36-2.48, p<0.001).

conclusionsActive or passive smoking during pregnancy is associated with an increased risk of intrauterine growth restriction and low birth weight. Cessation in the 1st and 2nd trimester reduces the risk of intrauterine growth restriction or low birth weight. Passive smoking has a deleterious impact on fetal development, intermediate to that of active smoking.

Indexed as

expired carbon monoxidefetal growth restrictionpregnancypreterm birthsmoking

Identifiers

PMID36118558
PMCPMC9413415

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.