Evidence map›Paper›PMID 42049294›Full record

ArticleBMJ open2026

Exposure to electronic cigarettes and heated tobacco products' preventive and promotional messages among schoolchildren aged 13-15 in Vietnam: a national cross-sectional study using GYTS 2022 data.

Bich Diep Pham, Duc Minh Do, Minh Ngoc Luu, Thi Diem Huong Nguyen, Thi Hai Phan, Tu Anh Duong, Giang Bao Kim

Abstract read
In one paragraph

Article in BMJ open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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

1 citing paper in PubMed.

  1. 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

7 authors.

Bich Diep PhamSchool of Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Viet Nam.
Duc Minh DoSchool of Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Viet Nam.ORCID http://orcid.org/0009-0007-6815-9164
Minh Ngoc LuuSchool of Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Viet Nam.
Thi Diem Huong NguyenSchool of Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Viet Nam.
Thi Hai PhanGovernment of Viet Nam Ministry of Health, Ha Noi, Viet Nam.
Tu Anh DuongGovernment of Viet Nam Ministry of Health, Ha Noi, Viet Nam.
Giang Bao KimSchool of Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Viet Nam kimbaogiang@hmu.edu.vn.ORCID http://orcid.org/0000-0003-2290-0205

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe increasing use of electronic cigarettes (e-cigarettes) and heated tobacco products (HTPs) among adolescents globally poses significant health risks fuelled by promotional and limited regulations. This cross-sectional study examines the prevalence of e-cigarette and HTP promotions and preventive messages and identifies factors linked to exposure and e-cigarette/HTP use among Vietnamese schoolchildren aged 13-15.

methodUsing data from the 2022 Global Youth Tobacco Survey in Vietnam, 3873 secondary and high school students were analysed. Logistic regression was applied to assess the relationships among demographic factors, exposure to promotional, harm-preventive messages and e-cigarette/HTP use.

resultsResults revealed that only 18.3% of the students reported exposure to e-cigarette and HTP promotion messages. However, among those exposed, the majority (10.9% of the total sample) encountered these promotions primarily on social media. In comparison, 66.9% of students encountered preventive messages, mostly via television or radio (28.8% of the total sample). Higher pocket money (≥US$0.9 per week, OR=1.37, 95% CI 1.07 to 1.75; ≥US$2.2 per week, OR=1.51, 95% CI 1.16 to 1.95), parental smoking (OR=2.50, 95% CI 1.31 to 4.78) and current e-cigarette/HTPs user (OR=2.58, 95% CI 1.56 to 4.30) were associated with increased exposure to promotions. Seeing promotions (social media platform: OR=2.9, 95% CI 1.7 to 5; websites: OR=3.4, 95% CI 1.4 to 8.3) significantly heightened the likelihood of using e-cigarettes and HTPs. In contrast, exposure to preventive messages does not have significant protective effects on e-cigarette/HTP use (social media platform: OR=0.8, 95% CI 0.4 to 1.5).

conclusionThe study highlights a critical gap in tobacco control. While digital promotional communication significantly drives the current use of e-cigarettes/HTPs among students, current preventive communication does not show a significant protective effect. Public health strategies must urgently prioritise targeting social media and internet platforms to counteract the pervasive influence of the tobacco industry on school-aged children.

Indexed as

Electronic Nicotine Delivery SystemsTobacco ProductsAdolescentCross-Sectional StudiesDigital MediaFemaleHumansLogistic ModelsMaleMedia ExposureStudentsVietnamAdolescentPUBLIC HEALTHTobacco Use

Identifiers

PMID42049294
PMCPMC13140998

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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.