Evidence map›Paper›PMID 25636793›Full record

ArticleBMJ open2015

Prevalence of smoking restrictions and child exposure to secondhand smoke in cars and homes: a repeated cross-sectional survey of children aged 10-11 years in Wales.

Graham F Moore, Laurence Moore, Hannah J Littlecott, Nilufar Ahmed, Sophia Lewis, Gillian Sulley, Elen Jones, Jo Holliday

Abstract read
In one paragraph

Article in BMJ open, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Are People More Likely to Vape or Smoke Indoors? A Population Survey of Adults in England.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2024
    Article
  3. Article
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  13. A Cross-Sectional Study of Smoking Behaviors and Attitudes of Parents in Pediatric Primary Care Settings.International journal of environmental research and public health · 2018
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Smoke-free legislation and child health.NPJ primary care respiratory medicine · 2016
    Review
  19. Article
  20. 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

8 authors.

Graham F MooreCentre for the Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer), School of Social Sciences, Cardiff University, Cardiff, UK.
Laurence MooreMRC/CSO Social & Public Health Sciences Unit, University of Glasgow, Glasgow, UK.
Hannah J LittlecottCentre for the Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer), School of Social Sciences, Cardiff University, Cardiff, UK.
Nilufar AhmedCentre for the Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer), School of Social Sciences, Cardiff University, Cardiff, UK School of Social Sciences, Cardiff University, Cardiff, UK.
Sophia LewisSchool of Social Sciences, Cardiff University, Cardiff, UK.
Gillian SulleyCentre for the Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer), School of Social Sciences, Cardiff University, Cardiff, UK.
Elen JonesCentre for the Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer), School of Social Sciences, Cardiff University, Cardiff, UK.
Jo HollidayCentre for the Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer), School of Social Sciences, Cardiff University, Cardiff, UK.

Funding

British Heart FoundationCancer Research UKMedical Research Council MC_UU_12017/14Medical Research Council MR/K021400/1Medical Research Council MR/K023233/1Medical Research Council MR/KO232331/1Wellcome Trust
6 · The paper itself

Abstract

objectiveSmall increases in smoking restrictions in cars and homes were reported after legislation prohibiting smoking in public places. Few studies examine whether these changes continued in the longer term. This study examines changes in restrictions on smoking in cars and homes, and child exposure to secondhand smoke (SHS) in these locations, since 2008 postlegislation surveys in Wales.

settingState-maintained primary schools in Wales (n=75).

participantsChildren aged 10-11 years (year 6) completed CHETS (CHild exposure to Environmental Tobacco Smoke) Wales surveys in 2007 (n=1612) and 2008 (n=1605). A replication survey (CHETS Wales 2) was conducted in 2014, including 1601 children. PRIMARY OUTCOME VARIABLE: Children's reports of whether smoking was allowed in their car or home and exposure to SHS in a car or home the previous day.

resultsThe percentage of children who reported that smoking was allowed in their family vehicle fell from 18% to 9% in 2014 (OR=0.42; 95% CI 0.33 to 0.54). The percentage living in homes where smoking was allowed decreased from 37% to 26% (OR=0.30; 95% CI 0.20 to 0.43). Among children with a parent who smoked, one in five and one in two continued to report that smoking was allowed in their car and home. The percentage reporting SHS exposure in a car (OR=0.52; 95% CI 0.38 to 0.72) or home (OR=0.44; 95% CI 0.36 to 0.53) the previous day also fell. Children from poorer families remained less likely to report smoking restrictions.

conclusionsSmoking in cars and homes has continued to decline. Substantial numbers of children continue to report that smoking is allowed in cars and homes, particularly children from poorer families. A growing number of countries have legislated, or plan to legislate, banning smoking in cars carrying children. Attention is needed to the impact of legislation on child health and health inequalities, and reducing smoking in homes.

Indexed as

AutomobilesHousingParentsSmoke-Free PolicySmokingAir Pollution, IndoorChildChild WelfareCross-Sectional StudiesEnvironmental ExposureFemaleHumansMaleOdds RatioParentingPrevalenceTobacco Smoke PollutionPREVENTIVE MEDICINEPUBLIC HEALTHSECONDHAND SMOKE

Identifiers

PMID25636793
PMCPMC4316441

What OpenQuestion holds

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LicenceCC BY
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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.