Evidence map›Paper›PMID 27864244›Full record

ArticleBMJ open2016

Impact of smoking on fertility and age of menopause: a population-based assessment.

Jean-Baptiste Oboni, Pedro Marques-Vidal, François Bastardot, Peter Vollenweider, Gérard Waeber

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.6field-weighted citation impact, top 26% of its field
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

11 citing papers in PubMed, 28 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Jean-Baptiste OboniDepartment of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
Pedro Marques-VidalDepartment of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
François BastardotDepartment of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
Peter VollenweiderDepartment of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
Gérard WaeberDepartment of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
University of Lausanne · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsStudies in patients seeking medically assisted reproduction have shown that smoking reduces fertility, but little information is available in the general population. We assessed the associations between smoking and the number of children, childbearing planning and age at menopause in a representative sample of the population of Lausanne, Switzerland.

methodsData from 6711 participants (3530 women, age range 35-75 years) collected between 2003 and 2006 and again in 2009 and 2012. Smoking status, number of offsprings and age of menopause were assessed.

resultsWomen who currently smoke had significantly less children than former or never smokers: the number of children per women (average±SD) was 1.38±1.05, 1.45±1.07 and 1.576±1.16, respectively (p<0.001). Women who currently smoke had their first child at an earlier age than the others: 26.7±5.2, 27.4±5.4 and 26.9±5.2 years old for current, former and never smokers, respectively, (p=0.01). Similar findings were found for men: number of children per men 1.475±1.16, 1.67±1.13 and 1.55±1.22 for current, former and never smokers, respectively (p<0.001); no difference was found regarding age at the first child. The difference persisted after multivariate adjustment (adjusted for age, body mass index, Caucasian origins, alcohol consumption, caffeinated drinks consumption, educational level, receiving social help and women taking contraceptives) for the age at first child among women. No association was found between Heaviness of Smoking Index and the number of children among current smokers in both genders. Women who smoke had their menopause more than 1 year prior than never-smoking women (48.9±0.2 years compared with 47.8±0.3 years, respectively, p=0.002).

conclusionsSmoking is associated with an earlier age of having the first child and of menopause among women.

Indexed as

Age FactorsFertilityMenopauseAdultAgedAlcohol DrinkingDiabetes MellitusEducational StatusFemaleHumansMaleMiddle AgedMultivariate AnalysisProportional Hazards ModelsRisk FactorsSmokingEPIDEMIOLOGYPREVENTIVE MEDICINEREPRODUCTIVE MEDICINETOXICOLOGY

Identifiers

PMID27864244
PMCPMC5128850
OpenAlexW2555860667

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.