Evidence map›Paper›PMID 26699863›Full record

Observational studyBMC pediatrics2015

Maternal post-natal tobacco use and current parental tobacco use is associated with higher body mass index in children and adolescents: an international cross-sectional study.

Irene Braithwaite, Alistair W Stewart, Robert J Hancox, Richard Beasley, Rinki Murphy, Edwin A Mitchell, ISAAC Phase Three Study Group

Open access · goldAbstract readMulticenter StudyObservational Study
In one paragraph

Observational study in BMC pediatrics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.0field-weighted citation impact, top 19% 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

6 citing papers in PubMed, 12 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

7 authors at 2 institutions in 1 country.

Irene BraithwaiteMedical Research Institute of New Zealand, Private Bag 7902, Newtown, Wellington, 6242, New Zealand. irene.braithwaite@mrinz.ac.nz.
Alistair W StewartSchool of Population Health, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand. aw.stewart@auckland.ac.nz.
Robert J HancoxDepartment of Preventive & Social Medicine, Dunedin School of Medicine, University of Otago, Dunedin, 9016, New Zealand. bob.hancox@otago.ac.nz.
Richard BeasleyMedical Research Institute of New Zealand, Private Bag 7902, Newtown, Wellington, 6242, New Zealand. richard.beasley@mrinz.ac.nz.
Rinki MurphyDepartment of Medicine, Faculty of Medicine and Health Sciences, The University of Auckland, Auckland, New Zealand. r.murphy@auckland.ac.nz.
Edwin A MitchellDepartment of Paediatrics: Child and Youth Health, Faculty of Medicine and Health Sciences, The University of Auckland, Auckland, New Zealand. e.mitchell@auckland.ac.nz.
ISAAC Phase Three Study Group
University of Auckland · NZMedical Research Institute of New Zealand · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe investigated whether maternal smoking in the first year of life or any current parental smoking is associated with childhood or adolescent body mass index (BMI).

methodsSecondary analysis of data from a multi-centre, multi-country, cross-sectional study (ISAAC Phase Three). Parents/guardians of children aged 6-7 years completed questionnaires about their children's current height and weight, whether their mother smoked in the first year of the child's life and current smoking habits of both parents. Adolescents aged 13-14 years completed questionnaires about their height, weight and current parental smoking habits. A general linear mixed model was used to determine the association between BMI and parental smoking.

results77,192 children (18 countries) and 194 727 adolescents (35 countries) were included. The BMI of children exposed to maternal smoking during their first year of life was 0.11 kg/m(2) greater than those who were not (P = 0.0033). The BMI of children of currently smoking parents was greater than those with non-smoking parents (maternal smoking: +0.08 kg/m(2) (P = 0.0131), paternal smoking: +0.10 kg/m(2) (P < 0.0001)). The BMI of female adolescents exposed to maternal or paternal smoking was 0.23 kg/m(2) and 0.09 kg/m(2) greater respectively than those who were not exposed (P < 0.0001). The BMI of male adolescents was greater with maternal smoking exposure, but not paternal smoking (0.19 kg/m(2), P < 0.0001 and 0.03 kg/m(2), P = 0.14 respectively).

conclusionParental smoking is associated with higher BMI values in children and adolescents. Whether this is due to a direct effect of parental smoking or to confounding cannot be established from this observational study.

Indexed as

Body Mass IndexSmokingAdolescentChildCross-Sectional StudiesFemaleHumansMaleParentsPediatric Obesity

Identifiers

PMID26699863
PMCPMC4690230
OpenAlexW2207662833

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.