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RESEARCH PAPER
Secondhand smoke exposure and sleep disturbances among Korean adolescents: A nationally representative cross-sectional study
1
Research Institute of Social
Development, Southwestern
University of Finance and
Economics, Chengdu, China
2
Graduate School of
Information Sciences, Tohoku
University, Sendai, Japan
3
School of Social and
Behavioral Sciences, Nanjing
University, Nanjing, China
Submission date: 2025-10-05
Final revision date: 2025-10-24
Acceptance date: 2025-10-28
Publication date: 2025-12-31
Corresponding author
Yunyun Xu
School of Social and Behavioral Sciences, Nanjing University, Nanjing 210046, Jiangsu, China
School of Social and Behavioral Sciences, Nanjing University, Nanjing 210046, Jiangsu, China
Tob. Induc. Dis. 2025;23(December):200
KEYWORDS
TOPICS
ABSTRACT
Introduction:
Inadequate sleep duration among adolescents is increasingly recognized as a significant public health concern, with potential associations with various environmental exposures. This study investigates the association between secondhand smoke (SHS) exposure and sleep duration in Korean adolescents.
Methods:
This study employed a pooled cross-sectional design using data from the nationally representative Korea Youth Risk Behavior Web-based Survey from 2021 to 2024 (n=195664). This study analyzed self-reported sleep duration (hours/ minutes) from the Korea Youth Risk Behavior Web-based Survey (KYRBS). Ordinary least squares regression models were used to analyze the association between SHS exposure days and sleep duration, adjusting for individual, school, and family-level control variables. The moderating effect of tobacco use was examined through interaction terms.
Results:
SHS exposure demonstrated a significant negative association with adolescent sleep duration. After full adjustment for control variables, each additional day of SHS exposure was associated with a reduction in weekly average sleep duration (β= -0.027; 95% CI: -0.029 – -0.024, p<0.01), weekday sleep duration (β= -0.030; 95% CI: -0.03 – -0.028, p<0.01), and weekend sleep duration (β= -0.018; 95% CI: -0.023 – -0.013, p<0.01). Tobacco use significantly moderated this relationship, with the interaction term showing positive coefficients across all sleep duration models.
Conclusions:
SHS exposure significantly associated with sleep deprivation among Korean adolescents, with this association being influenced by individual tobacco use habits.
Inadequate sleep duration among adolescents is increasingly recognized as a significant public health concern, with potential associations with various environmental exposures. This study investigates the association between secondhand smoke (SHS) exposure and sleep duration in Korean adolescents.
Methods:
This study employed a pooled cross-sectional design using data from the nationally representative Korea Youth Risk Behavior Web-based Survey from 2021 to 2024 (n=195664). This study analyzed self-reported sleep duration (hours/ minutes) from the Korea Youth Risk Behavior Web-based Survey (KYRBS). Ordinary least squares regression models were used to analyze the association between SHS exposure days and sleep duration, adjusting for individual, school, and family-level control variables. The moderating effect of tobacco use was examined through interaction terms.
Results:
SHS exposure demonstrated a significant negative association with adolescent sleep duration. After full adjustment for control variables, each additional day of SHS exposure was associated with a reduction in weekly average sleep duration (β= -0.027; 95% CI: -0.029 – -0.024, p<0.01), weekday sleep duration (β= -0.030; 95% CI: -0.03 – -0.028, p<0.01), and weekend sleep duration (β= -0.018; 95% CI: -0.023 – -0.013, p<0.01). Tobacco use significantly moderated this relationship, with the interaction term showing positive coefficients across all sleep duration models.
Conclusions:
SHS exposure significantly associated with sleep deprivation among Korean adolescents, with this association being influenced by individual tobacco use habits.
CONFLICTS OF INTEREST
The authors have completed and submitted the ICMJE Form for
Disclosure of Potential Conflicts of Interest and none was reported.
FUNDING
There was no source of funding for this research.
ETHICAL APPROVAL AND INFORMED CONSENT
Ethical approval and informed consent were not required for this study
which is a secondary analysis of existing data.
DATA AVAILABILITY
The data supporting this research are available from the following
sources: https://www.kdca.go.kr/yhs/, http://yhs.cdc.go.kr .
AUTHORS' CONTRIBUTIONS
FH and YW: conceptualization, methodology, software, writing,
reviewing and editing of the manuscript. FH, YW and YX: data
analysis and interpretation, writing of original draft, visualization and
investigation. WD: supervision. SX and WD: software and validation. All
authors read and approved the final version of the manuscript.
PROVENANCE AND PEER REVIEW
Not commissioned; externally peer reviewed.
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