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Association of second-hand smoking with sleep quality among adults in Ibadan, Nigeria: a cross-sectional evaluation of data from the COMBAT-CVDs study

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Abstract

Purpose

Sleep quality (SQ) is essential in the overall well-being and quality of life, but little is known about the association of secondhand smoking (SHS) with SQ. This study assessed the relationship between SHS and SQ among adults who had never smoked in Ibadan, Nigeria.

Methods

We identified 3193 respondents who had never smoked or used any form of tobacco product in the Community-based Investigation of the Risk Factors for Cardiovascular Diseases in the Ibadan and suburbs (COMBAT-CVDs) study. SHS was self-reported, SQ assessed using a sleep quality scale, and SQ scores were classified by the quartile distributions of SQ scores in this sample as good (< 7), moderate (7–13), fair (14–20), and poor (≥ 21), and logistic regression models were used to estimate the multivariable-adjusted odds ratio and 95% confidence interval (CI) of the association between SHS and SQ in a two-sided test at P < 0.05.

Results

The mean (SD) of age in this sample was 34.8 ± 15.1 years; 1621 (50.8%) were females, and 848 (26.6%) experienced SHS. The multivariable-adjusted odds by categories of SQ scores (using good SQ as reference) in the light of SHS were OR: 1.64 (95%CI 1.28, 2.12) for moderate SQ, OR: 1.88 (95%CI 1.46, 2.42) for fair SQ and OR: 2.14 (95%CI 1.66, 2.75) for poor SQ; P < 0.0001 after adjusting for relevant covariates. The sex- and age groups- stratified analyses revealed similar trends.

Conclusion

SHS is associated with higher odds of poor SQ in this study. Culturally relevant interventions for mitigating exposure to SHS might improve SQ and overall quality of life, particularly among vulnerable populations.

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Data availability

Individual participant data that underlie the results reported in this article (text, tables, and figures) has been de-identified. The dataset is available upon reasonable request, and a proposal to access the data should be directed to the COMBAT-CVDs study data access committee (PI: onojamatthew@yahoo.co.uk). Data requestors will need to sign a data access agreement.

References

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Acknowledgements

We want to thank all volunteers for participating in the study.

Funding

This study did not receive any funding. However, the Postgraduate College, University of Ibadan, Nigeria, offered APO a postdoctoral fellowship with the support of OMA. Also, APO is a recipient of the Brain Pool Fellowship of the National Research Foundation of Korea (2020H1D3A1A04081265). OJA is a recipient of the SIGHPC Computational and Data Science Fellowship in the United States. The funding support played no role in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript.

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Contributions

APO and OMA conceptualized and designed the study. APO, DKD, and OJA curated the data and conducted the formal analysis. APO wrote the first draft. ASO and OMA critically revised the manuscript for important intellectual content. All authors read and approved the final version to be published and agreed to be accountable for the work.

Corresponding author

Correspondence to Onoja Matthew Akpa.

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Conflict of interest

The authors have no conflict of interest to declare that are relevant to the content of this article.

Ethical approval

The Ethics Review Committee of the Department of Planning, Research and Statistics Division of the Ministry of Health, Oyo State Government, Nigeria, approved the study (Approval number AD13/479/2029A), and all study participants provided written informed consent. Individual participant data that underlie the results reported in this article (text, tables, and figures) has been de-identified.

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Okekunle, A.P., Asowata, O.J., Danladi, D.K. et al. Association of second-hand smoking with sleep quality among adults in Ibadan, Nigeria: a cross-sectional evaluation of data from the COMBAT-CVDs study. Int Arch Occup Environ Health 97, 279–289 (2024). https://doi.org/10.1007/s00420-023-02042-y

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  • DOI: https://doi.org/10.1007/s00420-023-02042-y

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