Evidence map›Paper›PMID 32801188›Full record

ArticleBMJ open2020

Does smoke-free legislation work for teens too? A logistic regression analysis of smoking prevalence and gender among 16 years old in Ireland, using the 1995-2015 ESPAD school surveys.

Shasha Li, Sheila Keogan, Luke Clancy

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.5field-weighted citation impact, top 36% 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

4 citing papers in PubMed, 8 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

3 authors at 1 institution in 1 country.

Shasha LiTU Dublin, TobaccoFree Research Institute Ireland, Kevin Street, Dublin 8, Dublin, Ireland.
Sheila KeoganTU Dublin, TobaccoFree Research Institute Ireland, Kevin Street, Dublin 8, Dublin, Ireland.
Luke ClancyTU Dublin, TobaccoFree Research Institute Ireland, Kevin Street, Dublin 8, Dublin, Ireland lclancy@tri.ie.ORCID 0000-0003-2407-2263
Technological University Dublin · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo assess the role of tobacco control legislation (TCL) in youth smoking in Ireland. To examine the effects of smoke-free legislation in youth. To consider whether TCL contributed to the gender equalisation in prevalence in 16 years old seen between 2003 and 2015.

settingData are from the 4 yearly European School Survey Project on Alcohol and Other Drugs from 1995 to 2015. Total sample size was 12.394. A logistic regression model on grouped data was used. Dependent variable is whether a student was a smoker in last 30 days. Independent variables are time, gender and the policy indicators, workplace ban on smoking, point-of-sale (POS) display ban, the introduction of graphical images on packs and the average real price of cigarettes.

resultsSmoking prevalence dropped from 41% in 1995 to 13% in 2015. The effects of policies differed between boys and girls. For girls, estimates for workplace bans, graphical images on packs and a unit real (Consumer Price Index adjusted) price increase reduced prevalence by 7.31% (95% CI 2.94% to 11.68%), 8.80% (95% CI 2.60% to 15.01%) and 5.87 (95% CI 2.96 to 8.79), respectively. The POS ban did not have a significant effect in girls. For boys, estimates for workplace bans and a unit real price increase, reduced prevalence by 8.41% (95% CI 5.16% to 11.66%) and 4.93% (95% CI 0.77% to 9.08%), respectively, POS gave an increase of 7.02% (95% CI 1.96% to 12.40%). The introduction of graphical images had an insignificant effect.

conclusionsTC legislation helps to explain the out-of-trend reduction in youth smoking prevalence. The estimated differential effects of the workplace ban, POS displays, real price changes and graphical images on packs help to explain the sharper decline in girls than boys. These findings should remind policy-makers to give increased consideration to the possible effects on young people of any legislative changes aimed at adults in TCL.

Indexed as

SchoolsTobacco Smoke PollutionAdolescentAdultCross-Sectional StudiesFemaleHumansIrelandLogistic ModelsMalePrevalenceSmokingSmoking PreventionTobacco Smoke Pollutionadvertising and promotiondenormalisationepidemiologygraphic tobacco imagespricesecondhand smoke

Identifiers

PMID32801188
PMCPMC7430408
OpenAlexW3049492928

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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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.