Evidence map›Paper›PMID 24889113›Full record

ArticleMaternal and child health journal2015

Timing of prenatal smoking cessation or reduction and infant birth weight: evidence from the United Kingdom Millennium Cohort Study.

Ji Yan, Peter A Groothuis

Abstract read
PubMed Publisher
In one paragraph

Article in Maternal and child health journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing 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

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

  1. Meta-Analysis on Associations of Timing of Maternal Smoking Cessation Before and During Pregnancy With Childhood Overweight and Obesity.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2023
    Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Cigarette Smoking During Pregnancy: Do Complete Abstinence and Low Level Cigarette Smoking Have Similar Impact on Birth Weight?Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2017
    Article
  15. Article
  16. Article
  17. Article
  18. Article
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

2 authors.

Ji YanDepartment of Economics, Appalachian State University, ASU Box 32051, Boone, NC, 28608, USA, yanj@appstate.edu.
Peter A Groothuis

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Smoking during pregnancy is a key contributor to poor infant health. Our study presents a dynamic relationship between the timing of prenatal smoking cessation or reduction and infant birth weight. Using a large representative dataset of a birth cohort in the United Kingdom, we apply regression analysis to examine the influences of cessation in smoking or reduction in smoking intensity at different months or trimesters on infant birth weight. For robustness checks, we use a rich set of additional covariates, a series of variable selection procedures, alternative birth outcome measures, and stratified samples. We find robust evidence that mothers who quit smoking by the third month of pregnancy or the end of the first trimester have infants of the same weight as those infants of nonsmokers. However, we find smoking cessation in the fourth month or any time beyond is associated with substantially lower infant birth weights. Two-thirds of the total adverse smoking impact on infant birth weight occurs in the second trimester. Our study also shows mothers who smoke throughout pregnancy but cut smoking intensity by the third month in pregnancy deliver infants of the same weight as those infants born to persistent light smokers. Our research suggests the efficacy of prenatal smoking cessation services can be significantly improved, if health professionals can encourage more pregnant women to quit smoking or reduce smoking intensity timely by the end of the first trimester.

Indexed as

Birth WeightPregnancy OutcomeSmoking CessationAdultFemaleFetal Growth RetardationHumansInfant, NewbornInfant, PrematureInfant, Small for Gestational AgeMaternal ExposureMothersPregnancyPregnancy Trimester, FirstPregnancy TrimestersPregnancy Trimester, Second

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.