| Summary: | Introduction
To explore the current situation of exposure of Korean adolescents
to secondhand smoke (SHS) in households our study aimed to determine
the relationship between family member smoking status, exposure to tobacco
information through mass media, and household SHS exposure.
Methods
The present study uses pooled data from the Korean adolescent health
behavior online survey conducted in 2015, 2018 and 2021, with 157944 participants.
The regression models were used to explore the association between the smoking
status of households, and exposure to tobacco information through mass media, and
household SHS exposure in adolescents, controlling for potential confounding factors.
Results
SHS exposure duration of Korean adolescents in households was 0.88
days per week. The households with smokers including the father (β=1.087; 95%
CI: 1.0–1.126), mother (β=1.461; 95% CI: 1.379– 1.543), siblings (β=0.545;
95% CI: 0.493–0.597), grandparents (β=0.224; 95% CI: 0.174–0.272), and other
relatives (β=0.170; 95% CI: 0.126–0.214), showed a positive association with
SHS exposure in adolescents within the household. At the same time, information
about anti-smoking ads on television (β= -0.042; 95% CI: -0.069 – -0.015) and
public transportation (β= -0.031; 95% CI: -0.054 – -0.010), showed a negative
association with SHS exposure in adolescents. However, broadcasts, online, and
newspaper non-smoking ads were not associated with SHS exposure (p>0.05).
In addition, regression models revealed that exposure to cigarette advertising in
magazines (β=0.131; 95% CI: 0.097–0.166), networks (β=0.151; 95% CI: 0.127–
0.175), convenience stores (β=0.061; 95% CI: 0.035–0.087), and supermarkets
(β=0.133; 95% CI: 0.108–0.158) is associated with SHS exposure in adolescents.
Finally, our study showed stronger ties between SHS exposure, family smoking,
and tobacco ads in girls. The link between maternal smoking, supermarket ads,
and adolescent SHS exposure intensified in 2021 compared to 2015.
Conclusions
Family and media were identified as potential factors associated with
SHS exposure in adolescents. Therefore, publicity and education regarding
household SHS hazards, and smoking bans in media, can be helpful in protecting
adolescents from SHS.
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