Evidence map›Paper›PMID 24534259›Full record

ArticleBMJ open2014

Second-hand smoke exposure in different types of venues: before and after the implementation of smoke-free legislation in Guangzhou, China.

Xiaohua Ye, Zhenjiang Yao, Yanhui Gao, Ya Xu, Ying Xu, Zhengwei Zhu, Sidong Chen, Yi Yang

Abstract read
In one paragraph

Article in BMJ open, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Cigarette Smoking and Secondhand Smoke Exposure Before and After a Tobacco-Free Olympic Policy Period: Qingdao, China.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2019
    Article
  7. Setting-Specific and Symptom-Specific Association between Secondhand Smoke Exposure and Depressive Symptoms.International journal of environmental research and public health · 2019
    Article
  8. Subnational smoke-free laws in China.Tobacco induced diseases · 2019
    Article
  9. Article
  10. Article
  11. The International Epidemiology of Lung Cancer: Latest Trends, Disparities, and Tumor Characteristics.Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer · 2016
    Article
  12. Article
  13. Article
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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

8 authors.

Xiaohua YeGuangdong Key Laboratory of Molecular Epidemiology, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, Guangdong, China.
Zhenjiang Yao
Yanhui Gao
Ya Xu
Ying Xu
Zhengwei Zhu
Sidong Chen
Yi Yang

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesSmoke-free legislation was implemented in Guangzhou on 1 September 2010. However, the smoke-free policy did not cover all indoor areas and smoking rooms can be set in some public places. This study aimed to assess changes in self-reported second-hand smoke (SHS) exposure in different types of venues and in homes, in order to evaluate the effectiveness of smoke-free legislation. METHODS/

designA repeated cross-sectional survey of representative participants was conducted in Guangzhou before and after the smoke-free legislation. Logistic regression models were used to examine the effectiveness of smoke-free legislation.

main outcome measuresSelf-reported exposure to SHS,antitobacco advertisements and tobacco advertisements.

participantsA total of 4900 participants before the ban and 5135 participants after the ban were selected using a multistage stratified design.

resultsIn full smoking ban places, overall self-reported SHS exposure has declined significantly from 58.8% to 50.3% (p<0.05) with greater drops in cultural venues, government offices and commercial venues. The smoke-free policy did not alter SHS exposure in smokers' homes (39.6% in 2009 vs 40.0% in 2011; p=0.454). Although a slight decrease in SHS exposure was observed in smoking rooms in hotels, workplaces, restaurants, cafes/bars/nightclubs and amusement parks, SHS continued to be high in those areas. The implementation of smoke-free legislation was accompanied by an increase in antitobacco advertisements.

conclusionsSHS exposure declines more significantly in full smoking ban places than in partial smoking ban places. The smoke-free policy in public places does not lead to more SHS exposure in homes. Therefore, it is recommended that Guangzhou should implement a 100% smoke-free policy in all public places and workplaces in the future.

Indexed as

Smoke-Free PolicyAdolescentAdultAdvertisingAgedChinaCross-Sectional StudiesEnvironmental ExposureHumansMiddle AgedSurveys and QuestionnairesTobacco Smoke PollutionTobacco Smoke PollutionEpidemiologyPublic Health

Identifiers

PMID24534259
PMCPMC3927996

What OpenQuestion holds

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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.