Evidence map›Paper›PMID 26170504›Full record

ArticleBulletin of the World Health Organization2015

Teenage smoking behaviour following a high-school smoking ban in Chile: interrupted time-series analysis.

Andrea B Feigl, Joshua A Salomon, Goodarz Danaei, Eric L Ding, Esteban Calvo

Open access · diamondAbstract read
In one paragraph

Article in Bulletin of the World Health Organization, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 31% 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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.

  1. Pooled it
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  3. Article
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  5. 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

5 authors at 1 institution in 1 country.

Andrea B FeiglDepartment of Global Health and Population, Harvard TH Chan School of Public Health, 677 Huntington Ave, 02115 Boston, MA, United States of America (USA).
Joshua A SalomonDepartment of Global Health and Population, Harvard TH Chan School of Public Health, 677 Huntington Ave, 02115 Boston, MA, United States of America (USA).
Goodarz DanaeiDepartment of Global Health and Population, Harvard TH Chan School of Public Health, 677 Huntington Ave, 02115 Boston, MA, United States of America (USA).
Eric L DingDepartment of Global Health and Population, Harvard TH Chan School of Public Health, 677 Huntington Ave, 02115 Boston, MA, United States of America (USA).
Esteban CalvoSchool of Business and Economics, Universidad Diego Portales, Santiago, Chile .
Diego Portales University · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the effect of a smoking ban in high schools on smoking behaviour among Chilean students.

methodsWe conducted an interrupted time-series analysis, using repeated cross-sectional data from Chile's school population survey (2000-2011) for high-school students aged 12-18 years and a control group of persons aged 19-24 years. Poisson regression models were used to assess trends in smoking behaviour before and after the policy changes. The outcome measures were self-reported smoking prevalence (any smoking in the past month) and high frequency of smoking (smoking 15 days or more per month).

findingsFrom 2005 to 2011, the prevalence of smoking declined among high-school students by 6.8% per year compared with 3.6% decline per year in the control group. The decline in the target group was 2.9% (95% confidence interval, CI: 0.18 to 5.00) greater. We estimated that 5-6 years after enforcing the law, smoking prevalence among high-school students was 13.7% lower as a result of the ban. The impact of the smoking ban was primarily driven by declines in smoking prevalence among students in grades 8 to 10. The smoking ban did not significantly alter the frequency of smoking.

conclusionThe 2005 school smoking ban reduced smoking prevalence among younger high-school students in Chile. Further interventions targeting older individuals and frequent smokers may be needed.

Indexed as

AdolescentAdolescent BehaviorChildChileCross-Sectional StudiesFemaleHumansInterrupted Time Series AnalysisMalePrevalenceSchoolsSmokingYoung Adult

Identifiers

PMID26170504
PMCPMC4490811
OpenAlexW1934865714

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.